Nuki Smart Lock Ultra review
Buyers wanting the most integrated Nuki experience (built-in WiFi and Matter) who are happy to replace their cylinder entirely and check BS3621 compliance separately.
By Tom Calder · Updated 24 July 2026 · Price checked against our tracker
Technically the most capable Nuki on test, with integrated WiFi, Matter support and a genuinely fast two-hour recharge — but installing it means physically swapping your existing door cylinder for Nuki's own Universal Cylinder, which carries no BS3621 or Sold Secure rating of its own, so it needs a clear-eyed insurance check that the clamp-on Nuki Pro doesn't.
Confirmed live on Amazon UK as of 24 Jul 2026, a 'limited time deal' 21% off the £309 RRP, sold by Nuki Home Solutions via Amazon.
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- Built-in WiFi and Matter support without needing a separate bridge
- Recharges fully in around two hours via the included magnetic cable
- Works with the optional Keypad 2.0 for fingerprint or PIN entry
- Replaces your existing door cylinder rather than clamping onto it, so any BS3621-rated lock you currently have is removed, not left in place
- Nuki makes no BS3621 or Sold Secure claim for the Universal Cylinder that comes with it
- At £245, even discounted from £309 RRP, it's the most expensive lock in this comparison
Key specs
| Type | Replaces existing cylinder with Nuki's Universal Cylinder |
| Access methods | App (BT/WiFi/Matter), auto-unlock, optional keypad |
| Battery life | Rechargeable, ~2hr recharge, months per charge |
| Insurance | Replaces cylinder — no BS3621/Sold Secure claim of its own |
Our rating is a considered spec-and-evidence verdict: we verify every specification against at least two independent sources, track the UK price daily, and say plainly who a product isn't for. Commissions never change a rating. Read the full methodology →
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