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Best Bike Locks Under £30 UK

We track 39 bike locks under £30 on Amazon UK, priced from £4.49 to £29.99. Half of them sit at or below £9.99. 27 brands are represented; 3 of them tie for the most listings with 4 listings apiece. The cheapest is the Armo© Heavy Duty Bike Bicycle Lock with Mounting Bracket Cable Lock for Scooter, Bike, Door with 2 X Padlock Keys at £4.49, the dearest the Kryptonite Keeper 785 Bike Chain Lock, 2.8 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence at £29.99. That is 39 of the 45 bike locks we list in total. Ranking is by verified rating and review volume — never by commission.

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Prices and availability are accurate as of the date shown and may change. Always check the current price on Amazon UK before buying.

As an Amazon Associate we earn from qualifying purchases.

Why these picks

  • Ordering is mechanical: customer rating first, then review count, then a stable tie-break. Commission is not an input, and no listing can pay for a position.
  • 0 of the 39 listings carry a customer rating. Unrated listings are not hidden — they sort to the bottom, where you can still see them.
  • No brand quota is applied. GRIFEMA holds 4 of the 39 places because that is what the catalogue contains, not because it was favoured.
  • Prices and availability were last read from Amazon UK on 2026-11-01; 37 of the 39 were in stock at that point. Always check the live page before buying.
  • Match lock type to how the bike is actually parked — a D-lock suits short, high-risk stops where rigidity matters most, a chain gives more flexibility to secure both wheels and the frame together.
  • Lock through the frame and, where possible, a wheel, rather than just through one wheel or the saddle, since anything not secured can simply be removed.
  • Secure to a fixed, solid object that the lock can't be lifted over or the anchor point cut through, rather than to a sign post that can be unbolted or a low railing the lock can be slid over.
  • Weigh the lock you're considering against how far and how often you'll actually carry it, since a lock left at home offers no protection at all.

Buying guide

What to look for

Lock type changes what it resists

A cable lock is light and flexible but easiest to cut through; a D-lock (U-lock) is rigid and generally harder to cut or lever but limits what you can loop it around; a chain lock sits between the two, offering more reach than a D-lock at the cost of extra weight. The right type depends more on where and how long the bike is left than on price alone.

Weight is a real trade-off, not just a spec

The materials that resist cutting and leverage attacks are heavy, and a lock bought for maximum resistance but too heavy to actually carry often ends up left at home. A lock that's carried every day and used properly beats a heavier one that stays in a drawer.

What you lock, and to what

A lock is only as strong as the anchor point it's attached to. Locking a bike through the frame to a rickety sign post, a low fence, or nothing at all beyond the front wheel gives a false sense of security regardless of how good the lock itself is. Secure to a purpose-built rack or ground anchor, and loop through the frame and a wheel wherever the lock's reach allows.

Visibility and location change the risk more than the lock does

A lock sitting in a busy, well-lit spot faces a very different level of attempted theft than one left overnight in a quiet, unlit corner. No lock is completely immune to a determined, well-equipped thief given enough uninterrupted time, so where and for how long a bike is left matters as much as the lock itself.

Common mistakes

  • Locking only through the front wheel or the saddle, leaving the rest of the bike free to be removed and ridden or carried away.
  • Locking to a sign post, low railing or fence that the lock can simply be lifted over or that can itself be unbolted.
  • Buying the heaviest, most resistant lock available and then leaving it at home because it's inconvenient to carry.
  • Leaving a bike locked in the same visible, quiet spot for long periods, which gives an opportunist more uninterrupted time to work on the lock.

Standards to look for: Look for a Sold Secure rating (Bronze, Silver, Gold or Diamond) on the listing — it's an independent test of how long a lock resists a defined set of attack tools, and several UK home insurers name a minimum tier as a condition of covering a bike, so it's worth checking your own policy against the rating rather than assuming any lock qualifies..

Frequently asked questions

How much do bike locks under £30 cost in the UK?
The 39 bike locks under £30 on this page run from £4.49 to £29.99, averaging £12.63. Half of them are listed at or below £9.99. Amazon UK prices move, so treat these as the figures at the last catalogue refresh rather than today's shelf price.
Which brands make bike locks under £30?
27 brands appear in this selection: GRIFEMA (4), SPGOOD (4), Sportneer (4), Abus (2), BURG-WÄCHTER (2) and Kryptonite (2), plus 21 more. The number in brackets is how many listings each has here, not a ranking of the brands themselves.
How many bike locks are under £30?
39 of the 45 bike locks we list — about 87%. Everything outside that 87% is still on the main bike locks page; this page is a filtered view of it, not a separate catalogue.
Is a D-lock better than a cable lock?
They suit different situations rather than one being universally better: a D-lock is rigid and generally more resistant to cutting, while a cable lock is lighter and easier to route around awkward shapes, but is usually easier to cut through.
Should I use two locks instead of one?
Using two different lock types (for example a D-lock plus a cable) forces a thief to carry and use two different sets of tools, which is a meaningful deterrent even without a specific security rating to quote.
What should I lock my bike to?
A fixed, solid object that the lock can't be lifted over and that can't itself be cut, unbolted or removed — a proper cycle rack or ground anchor rather than a sign post or low railing.

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