Smart Lock Security Ratings UK¶

Understanding UK smart lock security standards - BS 3621, TS 007, Sold Secure, and how they affect your home insurance premiums.

UK Security Certification for Smart Locks¶

The three main UK security ratings for smart locks are BS 3621 (British Standard for thief-resistant locks), TS 007 (a 3-star rating system for cylinders), and Sold Secure (independent testing by the Master Locksmiths Association). BS 3621 is the most common insurance requirement - it mandates the lock must withstand 3 minutes of attack by hand tools. TS 007 3-star is the highest cylinder rating, combining 1-star for drill/snap resistance and 2-star for the external face. Models like the Ultion Keyturn carry TS 007 3-star and BS 3621 dual certification. The Lockly Secure Plus is Sold Secure Diamond rated - the highest tier. Insurance providers including Aviva, Direct Line, and LV= offer average premium reductions of 10 - 15% for fitting certified locks.

How to Verify Your Smart Lock Certification¶

Every certified lock displays the Kitemark or Sold Secure logo on the product packaging and cylinder face. The BS 3621 number is stamped directly into the metal body. For TS 007, look for the 3-star logo - three stars arranged vertically. The UK Locksmiths Association publishes an approved product list at locksmiths.co.uk. Counterfeit cylinders are a growing problem; always purchase from authorised UK distributors such as Screwfix, Toolstation, or the brand's own website. Prices for TS 007 3-star cylinders range from £89 (Brisant Secure Smart) to £199 (Ultion Keyturn). Certification also ensures compliance with most building regulations, including Approved Document Q for new-build homes.

Specifications and Comparison¶

Standard	Rating Tiers	Key Requirement	Typical Insurance Discount
BS 3621	Pass / Fail	3-min hand-tool attack resistance	10 - 15%
TS 007	1-star, 2-star, 3-star	3-star = drill, snap, pick resistant	10 - 15%
Sold Secure	Bronze / Silver / Gold / Diamond	Diamond = highest attack resistance	10 - 20%
Secured by Design	Pass / Fail	Police-preferred specification	Up to 15%

FAQ¶

Do I need a BS 3621 lock for home insurance?: Most UK insurers require BS 3621 or TS 007 3-star on external doors. Check your policy wording - some accept Sold Secure as an equivalent.
What is the difference between TS 007 1-star and 3-star?: TS 007 1-star only covers the external face. TS 007 3-star adds cylinder drill and snap resistance plus bumping protection - significantly more secure.
Are smart locks covered by British Standards?: Yes - BS 3621:2021 now includes provisions for electronically operated locks. The standard was updated to cover motorised deadbolts and smart cylinders. For more information see our BS 3621 Smart Lock Compliance UK.

Last updated: 2026-05-31.

External Resources¶

For further information consult authority guidelines at the Ofcom.