For a taster of the old days, the moat of the Tower Of London has been turned into a dizzying rink (Tel: 0870 602 1100. Tube: Tower Hill), while the more metropolitan skater can figure-eight amid the high-rise buildings at Canary Wharf and, if brave enough, sip on cocktails at the on-ice bar (Canada Square Park E14. Tel: 0870 534 4444. Tube: Canary Wharf).