Locksmith questions.
Straight answers.

AHLP are based in Thornbury and typically reach most Bristol locations within 30 minutes. Response times across South Gloucestershire are similar. For areas further out — Clevedon, Keynsham, Stroud, Chepstow — expect 35–50 minutes. When you call 07700 100146, Sam will give you an honest ETA based on exactly where he is, not an optimistic number designed to get you off the phone.

In the vast majority of residential lockouts, no. A qualified locksmith will always attempt non-destructive entry first — using professional picking, bypass or decoding techniques depending on the lock type. Most modern residential locks can be opened non-destructively by an experienced locksmith. Drilling is a last resort and should only happen when non-destructive methods have genuinely failed. If a locksmith tells you they need to drill without attempting any other method first, be cautious. At AHLP we always attempt non-destructive entry first, explain our reasoning if we need to drill, and confirm any extra cost before proceeding.

Emergency lockouts with AHLP start from £80 for a standard residential door during the day. There is no call-out fee — you only pay for the work. We confirm a fixed price before starting. Out-of-hours callouts may carry a small supplement, but this is always confirmed before you commit. Beware of locksmiths who quote a low price on the phone then add call-out fees, assessment charges or drilling fees on arrival — these are the most common complaints about rogue locksmiths.

When you call, it helps to have your address ready, a description of your door type (UPVC, timber, composite), and an idea of what lock is fitted if you know. We’ll also ask for some form of ID confirming your address — this is standard practice to verify you’re the legitimate occupant. Don’t worry if you don’t have ID with you; we have procedures for verifying occupancy. If you’re locked out of a rented property, your tenancy agreement or a letter addressed to you at that property is sufficient.

Call 07700 100146. AHLP operate 24 hours a day, every day of the year including bank holidays. Sam answers directly — there’s no out-of-hours answering service or message system. If you’re locked out at night, stay somewhere well-lit if possible. Don’t attempt to force a window or door — the damage will cost significantly more to repair than a locksmith call-out. Out-of-hours callouts may carry a small supplement to the standard price, which is always confirmed before we start.

Most qualified locksmiths can open the majority of common residential lock types — euro cylinders, Yale rim latches, mortice sashlocks and deadlocks, UPVC multi-point mechanisms and most composite door locks. Very high-security locks such as some insurance-grade restricted systems may require specialist tools, but an NCFE Level 4 qualified locksmith will have the training for the vast majority of residential scenarios. If you describe your door and lock type when you call, Sam can tell you upfront what to expect.

Lock changes with AHLP start from £95 per door including labour and parts. Anti-snap cylinder upgrades start from £120. UPVC multi-point mechanism replacements start from £180. All prices include parts — there are no hidden charges added to a labour price. No call-out fee. We always confirm the fixed price before starting. Multi-door jobs for post-move lock changes are quoted individually — call 07700 100146 for a specific quote. See our lock changes page for full pricing.

Yes — if you’ve lost your keys and can’t account for where they are, you should change the affected locks. You have no way of knowing who found them or whether your address is traceable from a key fob, loyalty card or other item on the keyring. The cost of a lock change — from £95 per door — is low relative to the cost and disruption of a burglary. If your keys were stolen rather than lost, treat it as a higher priority. Call 07700 100146 for a same-day lock change.

Yes, immediately. Any lock that was compromised, damaged or forced should be replaced before the property is left unattended. Even if a lock appears undamaged, if entry was gained through a door there’s a possibility the cylinder has been damaged internally. AHLP respond 24/7 to post-break-in emergencies, replace compromised locks with BS3621 British Standard locks and anti-snap cylinders, assess how entry was gained and advise on additional measures. We can attend within 30 minutes across most of Bristol and South Gloucestershire.

First, don’t enter the property if you believe the burglar may still be inside — call 999. Once safe, report the burglary to Avon and Somerset Police by calling 101 (or 999 if in progress). Try not to disturb the scene before police attend. Contact your insurer to notify them. Then call a locksmith to secure the property — AHLP are available 24/7 on 07700 100146. Get a crime reference number from the police, as your insurer will require it.

A single door lock change typically takes 20–40 minutes. A full house with front door, back door and any side or patio doors usually takes 1.5 to 2 hours. Sam carries the most common lock sizes for Bristol properties on the van, so most jobs are completed in a single visit without ordering parts. Post-move full house lock changes can usually be booked and completed on the same day.

An anti-snap cylinder is a euro cylinder designed to resist lock snapping — one of the most common burglary techniques in the UK. Standard euro cylinders can be snapped off using cheap tools in under ten seconds, allowing an attacker to manipulate the mechanism and open the door. An anti-snap cylinder has a sacrificial break point engineered into it: if the outer section is snapped, the inner section protecting the mechanism remains intact and the door stays locked. A 3-star British Standard anti-snap cylinder is the minimum recommended by Avon and Somerset Police for homes in the Bristol area. AHLP fit them from £120 supply and fit.

BS3621 is the British Standard specification for locks on external doors. A lock carrying the BS3621 kitemark has been independently tested and certified for resistance to picking, drilling, forcing and key duplication. Most home insurance policies in the UK require BS3621 locks on all external doors as a minimum condition of cover. The standard applies to both 5-lever mortice locks and euro cylinders. All locks AHLP supply and fit meet BS3621. See our lock changes page for more.

A Yale lock (technically a rim nightlatch) is surface-mounted on the inside of the door. It uses a spring latch that catches automatically when the door closes. A mortice lock sits inside a pocket cut into the door body itself. Because it’s recessed rather than surface-mounted, it’s substantially stronger — the bolt extends directly into the door frame, making the door highly resistant to forcing. For insurance purposes, most policies require a mortice lock on external timber doors — a Yale latch alone is typically insufficient. Many Bristol Victorian and Edwardian terraces rely solely on a Yale latch, leaving homeowners unknowingly underinsured.

A mortice lock’s levers are the internal components that must align correctly for the key to operate the deadbolt. A 2-lever lock has only two levers — easy to pick and offering minimal security. It’s suitable only for internal doors. A 5-lever mortice lock has five levers, significantly increasing pick resistance. British Standard BS3621 requires 5-lever construction as the minimum for insurance-compliant external locks. AHLP supply and fit BS3621 5-lever mortice locks from £95. See our mortice locks page for full details.

A mortice sashlock has both a spring latch (which catches automatically when the door closes) and a deadbolt (thrown by the key). This makes it ideal for front and back doors where you want the door to latch shut as well as lock. A mortice deadlock has only the deadbolt — no latch — and is used on doors where a separate handle or latch is already fitted. On most Bristol terraced houses, the front door has a sashlock combined with a Yale rim latch above it. The back door typically has a deadlock alone.

A restricted key system uses cylinders with a patented keyway that cannot be duplicated at a standard key-cutting shop. Keys can only be copied by the authorised supplier with written sign-off from the designated key holder. This prevents unauthorised key copying by former occupants, staff or contractors. Particularly valuable for schools, nurseries, commercial premises and landlords with high staff or tenant turnover. AHLP can supply and fit restricted cylinders from £120, and can incorporate them into a master key hierarchy for multi-door premises.

Yes. Snapped key extraction is one of the most common jobs. In most cases the broken key can be extracted without damaging the lock using specialist extraction tools. Sam carries extraction equipment as standard and will assess whether the cylinder needs replacing after extraction — sometimes it’s been damaged by the snap. Call 07700 100146 and describe the situation; Sam will advise what to expect before attending.

Difficulty lifting the handle on a UPVC door is almost always a sign that the multi-point locking mechanism is wearing out, or that the door has dropped slightly on its hinges causing the bolts to bind. Address it promptly — a mechanism that’s becoming difficult will eventually fail entirely, leaving you unable to lock the door. In many cases it can be serviced, adjusted or replaced. Sam carries the most common UPVC mechanism types for Bristol door stock on the van, so most jobs are completed in a single visit. Mechanisms start from £180 supply and fit.

The most likely causes are a worn or failed multi-point mechanism, a snapped or failed euro cylinder, or door misalignment preventing the bolts from reaching the keep. None of these are emergencies if you can still close the door, but the property is not adequately secured until they’re fixed. Call 07700 100146 for a same-day assessment and repair.

Both are possible, and a good locksmith always assesses whether repair is viable before recommending replacement. Many UPVC multi-point mechanisms can be serviced or adjusted. However, once the main gearbox fails, full replacement is usually more cost-effective. The cylinder is typically replaceable independently of the mechanism. Sam will assess the specific fault on arrival and confirm the recommendation and price before touching anything.

Yes. Timber doors use mortice locks fitted into the door body. UPVC and composite doors use multi-point mechanisms — a system of hooks and bolts that engage multiple frame points when the handle is lifted, operated by a euro cylinder. The key security upgrade for UPVC and composite doors is fitting a 3-star anti-snap euro cylinder, since standard manufacturer-fitted cylinders offer minimal resistance to lock snapping. Mortice locks cannot be fitted to UPVC doors.

Most standard UK home insurance policies specify that external doors must be fitted with British Standard BS3621 locks as a minimum condition of cover. For timber doors, this typically means a 5-lever mortice lock. For UPVC and composite doors, a BS3621 cylinder. Some policies also require a secondary lock. Check your policy’s security requirements section, or call 07700 100146 and Sam can assess your current locks against typical insurance requirements and upgrade anything that doesn’t comply.

If your locks don’t meet your policy’s specified standards and you make a claim following a burglary, your insurer may reduce or refuse the claim. This is particularly common when entry was gained through a door with inadequate locks. The standard requirement — BS3621 5-lever mortice locks on external timber doors and BS3621 cylinders on UPVC doors — is not expensive to meet. AHLP can assess your doors, advise on what’s needed and upgrade to spec in a single visit, typically for under £200 per door.

Yes. Avon and Somerset Police actively recommend anti-snap cylinders for residential properties across Bristol and South Gloucestershire. Lock snapping is one of the most common burglary techniques nationally, and standard euro cylinders — fitted to the majority of UPVC and composite doors — offer no resistance to the technique. A 3-star anti-snap cylinder defeats lock snapping. AHLP fit them from £120 supply and fit; the job takes around 20 minutes per door.

The most obvious sign is that part of the cylinder is missing from the outside of the door — the round piece the key inserts into. You may also notice the door has been opened without a key, scuff marks around the cylinder, or the door now opens without a key being used. Lock snapping is a silent technique — often faster than picking and makes little noise. If you suspect a break-in, call 07700 100146. AHLP respond 24/7 and can replace a snapped cylinder and upgrade your security on the same visit.

The highest-impact, lowest-cost security upgrades for a typical Bristol home are: fitting a 3-star anti-snap cylinder on any UPVC or composite door (from £120, takes 20 minutes); fitting a BS3621 5-lever mortice lock on any timber external door that doesn’t already have one (from £95); ensuring all accessible ground floor windows have functioning window locks; and ensuring any side gate has an adequate padlock on a properly fitted hasp. Sam can carry out a security assessment on a visit and advise specifically on your property — no charge for the assessment beyond any work you decide to have done.

Yes — always, and without exception. When you complete on a property, you have no way of knowing how many copies of the keys exist or who holds them. Previous owners, tenants, estate agents, solicitors, cleaning companies and contractors may all have had keys cut over the years. A lock change is the only way to be certain nobody else has access. A typical Bristol house with front and back door takes around an hour and costs from £190 for both doors. All locks supplied meet BS3621 and home insurance requirements. See our lock changes page for full details.

Victorian and Edwardian terraces across Bristol’s inner suburbs — Clifton, Redland, Horfield, Bishopston, Fishponds, Kingswood, Bedminster — almost always have solid timber front and back doors. These require a 5-lever mortice sashlock or deadlock meeting BS3621 as the primary lock, typically combined with a Yale rim latch for convenience. The back door should also have a BS3621 mortice lock. AHLP are familiar with Bristol’s Victorian door stock and carry the most common mortice case dimensions on the van for a same-day job.

Change the affected lock. There is no other solution — once a key has been copied, you cannot know how many copies exist or where they are. Whether it’s a former occupant, an ex-partner, a contractor or a key that went missing, the only way to guarantee security is to replace the cylinder so existing keys no longer work. AHLP can carry out same-day lock changes across Bristol and South Gloucestershire from £95 per door.

Yes. Tenancy changeover lock changes are one of the most common jobs AHLP carry out for landlords and letting agents across Bristol and South Gloucestershire. We change locks at vacant possession, fit BS3621 locks and anti-snap cylinders, and can invoice directly to your letting agency or property management account. Same-day response for urgent changeovers. See our landlords page for full details.

Yes. AHLP can attend a tenant emergency lockout, carry out the work, and invoice directly to the landlord or letting agent. This is a common arrangement for landlords managing multiple properties. Mention this when you first call to set up the billing arrangement before the first job.

Commercial lease forfeiture is the legal process by which a commercial landlord terminates a tenancy and repossesses premises following a breach — most commonly non-payment of rent. The physical act is called peaceable re-entry. A certificated enforcement agent attends with a locksmith, who gains entry and changes all exterior locks. AHLP provide the locksmith element of forfeiture actions across Bristol and South Gloucestershire — attending alongside enforcement agents, gaining entry non-destructively where possible, changing locks and providing photographic documentation. We never attend a forfeiture job without a certificated enforcement agent present. See our commercial lease forfeiture page.

The two non-negotiable requirements are a current DBS check and willingness to work outside school hours. Beyond those, look for a verifiable professional qualification (NCFE Level 3 or 4), public liability insurance, and the ability to supply restricted key systems. AHLP are DBS checked, NCFE Level 4 qualified, insured, and always schedule education premises work outside the school day where possible. See our schools and nurseries page.

AHLP cover all Bristol city postcodes including BS1 (city centre), BS2 (Easton, St Pauls), BS3 (Bedminster, Southville), BS4 (Brislington), BS5 (Eastville, St George), BS6 (Redland, Cotham), BS7 (Bishopston, Horfield), BS8 (Clifton), BS9 (Henleaze, Stoke Bishop), BS10 (Southmead), BS13 (Hartcliffe), BS14 (Hengrove), BS15 (Kingswood), BS16 (Downend, Fishponds), and South Gloucestershire postcodes BS20 (Portishead), BS31 (Keynsham), BS32 (Bradley Stoke, Almondsbury), BS34 (Filton), BS35 (Thornbury), BS36 (Frampton Cotterell, Winterbourne) and BS37 (Yate). We also cover Stroud (GL5) and Chepstow (NP16).

Bristol has a large proportion of Victorian and Edwardian terraced housing, particularly in Clifton, Redland, Cotham, Bishopston, Horfield, Fishponds, Kingswood and Bedminster. These properties almost always have solid timber front and back doors requiring mortice locks — 5-lever sashlocks and deadlocks — often combined with a Yale rim latch. Post-war and 1960s–1980s housing typically has UPVC doors with multi-point mechanisms and euro cylinders. Newer developments and extensions often have composite doors, which also use euro cylinders but with heavier multi-point mechanisms. Sam carries parts for all of these door types on the van.

Bristol and South Gloucestershire fall under Avon and Somerset Police, who publish home security advice including specific guidance on anti-snap cylinders and BS3621 locks. Stroud falls under Gloucestershire Constabulary. Chepstow (NP16) falls under Gwent Police. For home security recommendations tailored to your area and property type, call 07700 100146 — Sam can advise based on the specific risks relevant to your location and door type.

AHLP stands for Auto Home Lock Pros. It’s a family-run father and son locksmith business based in Thornbury, South Gloucestershire. Sam is the main locksmith who attends jobs; Martyn co-owns the business, handles the operational side, and also attends jobs when needed. Both hold the NCFE Level 4 Locksmith qualification — the highest professional accreditation in the UK trade. AHLP was founded in September 2024. See our About Us page.

Both Sam and Martyn hold the NCFE Level 4 Locksmith qualification — the highest professional accreditation in the UK locksmith trade. AHLP is listed with Secured by Design (the UK Police crime prevention initiative) and is a recognised approved installer for Chubb and Yale locks. All locks supplied meet British Standard BS3621. AHLP is fully insured with public liability cover. Sam also holds a current DBS check.

No. AHLP charge no call-out fee on any job. You only pay for the work carried out, at a fixed price confirmed before we start. There are no assessment charges, no arrival fees, and no charges for providing a quote on arrival. This applies equally to emergency callouts, planned lock changes and commercial jobs.

AHLP operate on a fixed-price basis. Sam assesses the job and quotes a fixed price before starting. You decide whether to proceed — if you say no, you owe nothing. The price quoted is the price on the invoice. No additional charges for parts, no supplements added after the work, no charges not agreed in advance. Out-of-hours callouts may carry a small supplement to the standard price, but this is always confirmed on the phone before Sam leaves for the job.

Yes. Sam holds a current DBS (Disclosure and Barring Service) check, making him suitable to work at schools, nurseries, colleges and any other premises requiring a DBS check. The DBS details can be confirmed before any visit if required by a safeguarding policy or contractor approval process.

Yes. AHLP operate 365 days a year with no exceptions. Christmas Day, bank holidays, Easter — if you need a locksmith, call 07700 100146 and Sam will answer. Being genuinely 24/7 means no days off, not 24/7 except bank holidays.

Locksmithing is an unregulated trade in the UK — anyone can call themselves a locksmith without any training, qualification or insurance. This is why rogue locksmiths are common: low barriers to entry combined with high-demand emergency situations where customers feel they have no choice but to accept whatever price is quoted on arrival. The most common complaints involve locksmiths who quote a low price on the phone then add call-out fees, assessment charges and unnecessary drilling, resulting in bills of £200–£400. Choosing a locksmith who publishes their prices, holds a recognised qualification (NCFE Level 3 or 4) and has verifiable Google reviews is the most effective protection.

Warning signs include: a very low quoted price on the phone (under £75) with no mention of a call-out fee or parts; refusal to give a fixed quote before starting; claiming immediately that they need to drill without attempting any other entry method; an invoice significantly higher than the phone quote with unexplained additions; no verifiable local Google reviews; and a website showing multiple phone numbers in multiple cities — these are lead-generation sites that pass calls to whoever is available nearby, not a local business. AHLP publish all prices on the website, carry no call-out fee, quote a fixed price before starting, and all Google reviews are verifiable.