Passengers traveling through 19 British airports will be allowed to carry two pieces of cabin luggage through security checks starting on Monday, the government said.
The one-cabin bag rule, imposed for security reasons in 2006, is being lifted at Heathrow, Stansted, London City, Manchester, Cardiff, Birmingham and Aberdeen airports among others, the Department of Transport said.
Airports where the one-bag rule will stay in place include Gatwick, Luton, Leeds, Bradford and Liverpool.
Airport operator BAA PLC recommended that travelers check with airlines to see what carryon baggage policy is in place at their departure airport.
Transport Secretary Ruth Kelly said last week that improved security technology meant the restrictions could be relaxed.