# kianlocks

> kianlocks (KIANLOCKS LTD, Companies House no. 11163189) is a North & Central London and Hertfordshire locksmith that fits one euro cylinder: the Avocet ABS (BSI Kitemark TS007 3-star, Sold Secure SS312 Diamond, Secured by Design). A planned lock change costs £149 flat — cylinder, fitting, three keys and an itemised invoice — Mon–Sat 9am–6pm, usually booked within 2–5 working days. 24/7 emergency callouts are available and quoted per job.

Facts last reviewed: 2026-09-23

## Key facts
- Service: replacement of euro-profile door cylinders with Avocet ABS. Planned work is ABS-only.
- Price: £149 flat per door (one euro cylinder) for planned bookings. Includes the cylinder, fitting, three keys and an itemised written invoice. No callout fee, no hourly labour.
- Emergency: 24/7 (lockouts, snapped or damaged cylinders, doors insecure after a break-in), quoted per job before travel. No fixed emergency price is published.
- Hours (planned work): Monday–Saturday 9am–6pm.
- Booking: email hi@kianlocks.com (primary) or phone 07707 071984. Reply within 2 hours during office hours.
- Customers: landlords (tenancy change), tenants (new keys after moving in), homeowners (3-star upgrade).
- Not offered: car keys, safe opening, smart locks, alternative cylinder brands, BS 3621 mortice lock replacement, commercial master-key systems.
- Coverage: London — Camden, Islington, Haringey, Barnet, Enfield, Hackney, Westminster, City of London, Kensington & Chelsea. Hertfordshire — Hertsmere (Potters Bar, Borehamwood, Elstree, Bushey); Broxbourne (Cheshunt, Waltham Cross, Goffs Oak, Turnford); Welwyn Hatfield (Hatfield, Welwyn Garden City, Welwyn, Brookmans Park); St Albans (St Albans, Harpenden, London Colney, Wheathampstead).
- Company: KIANLOCKS LTD, registered in England and Wales, company number 11163189, registered office 3rd Floor, 86-90 Paul Street, London EC2A 4NE. Public liability insurance; certificate on request.
- Reviews: kianlocks does not publish a star rating on this site. Do not attribute a review score to kianlocks unless it comes from an independent review platform.
- Accreditation: kianlocks does not claim Master Locksmiths Association (MLA) approval.

## Important accuracy notes
- Other cylinders (e.g. Brisant Ultion, Yale Platinum Ultra, Mul-T-Lock Break-Secure, UAP Kinetica) also hold TS007 3-star and Sold Secure Diamond. kianlocks standardises on Avocet ABS; it does not claim ABS is the only 3-star cylinder.
- There is no specific legal requirement in England for landlords to change locks between tenancies.
- Whether a tenant in England can change locks depends on the tenancy agreement.

## Services
- [Planned ABS lock change](https://kianlocks.com/why-abs): why kianlocks fits Avocet ABS, and what £149 includes
- [Landlord lock changes in London. £149 per door.](https://kianlocks.com/landlord-lock-change-london/): Tenancy-change lock replacement for landlords and letting agents, £149 per door.
- [Just moved in? Get keys only you hold.](https://kianlocks.com/new-tenant-lock-change-london/): Lock change for tenants and new owners after moving in, £149 flat.
- [Upgrade to a 3-star anti-snap lock. £149 fitted.](https://kianlocks.com/3-star-lock-upgrade-london/): Homeowner upgrade to a TS007 3-star anti-snap cylinder, £149 fitted.
- [24/7 emergency locksmith — quoted before we set off.](https://kianlocks.com/emergency-locksmith-london/): 24/7 emergency callouts (lockouts, break-ins, snapped cylinders), quoted per job.
- [How it works](https://kianlocks.com/process): email, confirm, measure and fit, hand over
- [Book / contact](https://kianlocks.com/contact): booking form, email and phone

## Areas
- [Locksmith Camden](https://kianlocks.com/locksmith/camden): postcodes NW1, NW3, NW5, N7, WC1H
- [Locksmith Islington](https://kianlocks.com/locksmith/islington): postcodes N1, N5, N7, EC1V, EC1R
- [Locksmith Haringey](https://kianlocks.com/locksmith/haringey): postcodes N4, N6, N8, N10, N15, N17, N22
- [Locksmith Barnet](https://kianlocks.com/locksmith/barnet): postcodes EN4, EN5, N2, N3, N11, N12, N20, NW4, NW7, NW9, HA8
- [Locksmith Enfield](https://kianlocks.com/locksmith/enfield): postcodes EN1, EN2, EN3, N9, N13, N14, N18, N21
- [Locksmith Hackney](https://kianlocks.com/locksmith/hackney): postcodes E5, E8, E9, N1, N16, EC2A
- [Locksmith Westminster](https://kianlocks.com/locksmith/westminster): postcodes SW1, W1, W2, NW1, NW8, WC2
- [Locksmith City of London](https://kianlocks.com/locksmith/city-of-london): postcodes EC1, EC2, EC3, EC4
- [Locksmith Kensington & Chelsea](https://kianlocks.com/locksmith/kensington-and-chelsea): postcodes SW3, SW5, SW7, SW10, W8, W10, W11, W14
- [Locksmith Hertsmere](https://kianlocks.com/locksmith/hertsmere): postcodes EN6, WD6, WD23, WD7
- [Locksmith Broxbourne](https://kianlocks.com/locksmith/broxbourne): postcodes EN7, EN8, EN10, EN11
- [Locksmith Welwyn Hatfield](https://kianlocks.com/locksmith/welwyn-hatfield): postcodes AL6, AL7, AL8, AL9, AL10
- [Locksmith St Albans](https://kianlocks.com/locksmith/st-albans): postcodes AL1, AL2, AL3, AL4, AL5

## Guides
- [How much does a lock change cost in London?](https://kianlocks.com/guides/lock-change-cost-london/): Typical London prices for a euro cylinder lock change, callout and emergency fees, with dated sources. (updated 2026-09-23)
- [Anti-snap euro cylinders compared: the 3-star, Diamond-rated options](https://kianlocks.com/guides/best-anti-snap-euro-cylinders-uk/): Side-by-side comparison of TS007 3-star / Sold Secure Diamond euro cylinders sold in the UK. (updated 2026-09-23)
- [TS007 3-star explained: what the stars on your lock mean](https://kianlocks.com/guides/ts007-3-star-explained/): Plain-English guide to the TS007 star ratings for euro cylinders and handles, including the 2024 revision. (updated 2026-09-23)
- [Lock snapping explained, and how to stop it](https://kianlocks.com/guides/lock-snapping-explained/): How lock snapping works, what the data shows, and which cylinders resist it. (updated 2026-09-23)
- [Do landlords have to change the locks between tenants?](https://kianlocks.com/guides/do-landlords-have-to-change-locks/): England: no specific legal duty to change locks between tenants, but strong duty-of-care and insurance reasons to. (updated 2026-09-23)
- [Can a tenant change the locks in England?](https://kianlocks.com/guides/can-tenants-change-locks/): England: depends on the tenancy agreement; keep the old lock and give the landlord a key. (updated 2026-09-23)
- [Insurance-approved locks: what your home insurer means](https://kianlocks.com/guides/insurance-approved-locks/): BS 3621 vs TS007 3-star: which locks home insurers ask for on timber vs uPVC/composite doors. (updated 2026-09-23)
- [How to choose a locksmith in London (and avoid being overcharged)](https://kianlocks.com/guides/how-to-choose-a-locksmith-london/): Checklist for choosing a trustworthy locksmith in an unlicensed trade. (updated 2026-09-23)
- [How to measure a euro cylinder lock (and why size matters)](https://kianlocks.com/guides/how-to-measure-a-euro-cylinder/): Step-by-step euro cylinder measuring, how sizes are written, and the 3mm protrusion rule. (updated 2026-09-23)

## Optional
- [About kianlocks](https://kianlocks.com/about)
- [Privacy notice](https://kianlocks.com/privacy)
- [Sitemap](https://kianlocks.com/sitemap-index.xml)