Locksmith choice for England households: compare booking terms

Compare London Locks and N1 Locksmiths

London Locks gives households published inclusive lock-change prices and a parts-and-labour guarantee; N1 Locksmiths’ homeowner page leaves those booking terms open.[2][3] Both are London examples, not England-wide recommendations: their stated coverage centres on East London and North London respectively.[2][3]

London Locks

• Residential coverage: London Locks describes residential lockout and lock-change services principally in East London; confirm your postcode before booking.[3]
• Pricing and booking certainty: Basic cylinder changes start at £135 and BS3621 mortice locks cost £150–£190, including parts, labour and VAT. The provider states it offers fixed-price quotes with no call-out charge.[3]
• Guarantee: It states a 12-month parts-and-labour guarantee for lock changes.[3]

N1 Locksmiths

• Residential coverage: N1 describes North London and its wider London residential service areas, with 24-hour emergency cover; confirm your postcode before booking.[2]
• Pricing and booking certainty: N1 Locksmiths’ contact page offers a free, no-obligation property assessment but does not publish service prices, call-out fees, VAT treatment or fixed-quote terms.[2][5]
• Guarantee: Request written warranty terms before booking rather than assuming cover equivalent to London Locks’ guarantee.[2][3]

The difference is the booking detail available, not evidence of superior workmanship. Use these terms to frame your enquiry, not to assume either business can attend your address at a particular time.

Verify the business and authority to enter

Before confirming attendance, ask for the trading business name, address, postcode coverage and the name of whoever will attend. Tradehand also recommends checking the address on a map.[4]

Tradehand describes UK locksmithing as unregulated, so do not treat Master Locksmiths Association (MLA) approval as a universal statutory licence.[4] If approval is claimed, follow its advice to check the MLA register and match the listing’s licence number to the attending locksmith’s current MLA ID card. Tradehand also warns against “police approved” claims.[4] Apply these checks to either provider rather than assuming approval.

Prepare photo ID and evidence of your authority to enter. London Locks’ examples include a driving licence or passport, plus a utility bill, lease or landlord letter.[1] If the documents are locked inside, explain this before attendance and discuss acceptable alternatives. London Locks describes possible database checks or contact with a property manager, but says work may be refused if authority remains doubtful.[1]

Compare the total, not a headline price

Use London Locks’ inclusive figures as a lock-change benchmark, not as lockout-entry prices. They include parts, labour and VAT; the final price depends on the brand and security level.[3] A labour-only quote needs the remaining costs added before the totals are comparable.

Tradehand recommends separating call-out, labour, parts and VAT, and checking whether the quote is fixed.[4] Ask:

“Please quote for the job described, separating any call-out charge, labour and its billing basis, the named replacement parts and VAT. Include any after-hours charge and give the total payable. Is that total fixed?”

Also ask how the total would change if the diagnosis changes. Make your instruction explicit: agree a revised price with me before doing additional work. This follows Tradehand’s advice to confirm the price before work starts, rather than accepting extra charges afterwards.[4]

Agree the diagnosis before drilling or replacement

Describe the symptoms rather than prescribing the fix: a lockout, stuck or snapped key, cylinder problem, failed mechanism or damaged frame can call for different work.[2][3] London Locks says a sound lock body may need only a cylinder change, whereas worn or non-compliant internal hardware may justify full replacement.[3]

Tradehand recommends non-destructive entry first.[4] If drilling or replacement is proposed, ask the locksmith to pause, explain why it is needed, identify exactly what will be replaced and agree the total before proceeding. Tradehand reports MLA guide prices starting at about £90 for entry and £85 an hour for labour, and identifies TS 007 three-star ratings as the anti-snap benchmark for uPVC-door euro cylinders; insurance requirements vary, and this does not mean drilling is never justified.[4]

Ask which standard the proposed replacement meets. Tradehand discusses BS 3621 for external-door locks and TS 007 for euro cylinders.[4] Check your own insurance wording: London Locks says “most” insurers require BS3621, N1 says “many/several” policies do, while Tradehand says some do and some do not.[2][3][4] That disagreement makes your policy—not a general provider statement—the relevant check.

What to confirm with each provider

Settle these points in writing before booking:

• London Locks: ask it to confirm exact after-hours surcharges, minimum orders, included key quantities and cancellation/refund terms.[1][3]
• N1 Locksmiths: ask it to confirm prices, call-out fees, parts prices, VAT treatment, fixed-quote terms, included key quantities, warranty and cancellation/refund terms.[2]
• Defects: ask which business is responsible for putting defective work right, which parts and labour are covered, what exclusions apply and how to report a fault.
• Return visits and cancellation: ask whether a return visit could carry a charge, what remedy is offered for defective work or components, and what happens if you cancel after dispatch or before work begins.

Treat these as questions to resolve, not established terms. A lock-change guarantee does not answer the separate questions about cancellation or the agreed process for reporting defects.

Check keys, door operation and paperwork

At handover, check the finished work against the agreement:

• Scope and price: check that the fitted component and completed work match what you authorised.[3][4]
• Keys: count the keys against the quantity agreed at booking, then try every supplied key. London Locks says it tests new keys in the customer’s presence and asks the customer to confirm smooth operation from both sides.[3]
• Invoice and packaging: request an invoice itemising call-out, labour, parts and VAT where registered, and retain the new component’s packaging, as Tradehand advises.[4]
• Remedy for defects: keep the written guarantee and defect-reporting contact with the invoice.

For an address within either provider’s coverage, choose on confirmed scope, total price and responsibility for defects—not missing information. Elsewhere in England, use the same checks with local candidates rather than treating these London examples as nationwide options.

References

1. How Do Locksmiths Verify Ownership? – London Locks (londonlocks.com)
2. How to Change a Door Lock Yourself (UK Guide) | N1 Locksmiths (n1locksmiths.co.uk, 2026)
3. Lock Change London – A Guide to Securing Your Property (londonlocks.com)
4. Are Locksmiths Registered? How to Check One | Tradehand (tradehand.com)
5. Contact N1 Locksmiths | 02071297496 (n1locksmiths.co.uk)