KRYPTONITE New York 3000 lock, £79.99,

For maximum security in high theft areas, you need a hefty shackle that’s resistant to bolt-cutters and leverage attacks and this one offers 16mm of case-hardened Kryptonium steel, bettered only by the monstrous 18mm-shackled Fahgettaboudit Mini in the brand's line-up. You also need 
a tamper-proof cylinder — again this has an anti-pick system 
with double-deadbolt lock, with the keyhole protected by a sliding dustcover. You get spare keys (one with a light), a carrying bracket for your bike and, most importantly, reassuring Sold Secure Gold rating. You can comfortably secure frame, 
rear wheel and a removed front wheel to most common stands. Worth its weight, many times over.