Members of the UK's RMT transport workers union form a picket line outside London's Euston station in the latest strike action by workers in a range of sectors over the worst cost-of-living crisis in a generation. Network Rail, which operates the UK's rail services, warned travellers of "significantly reduced" train services or no services at all in some areas until Sunday. Union boss Mick Lynch says "the government holds the key to this and they're not willing to use it at the moment." IMAGES AND SOUNDBITES