Part of BFI collection "London on the Move". Informational film about the London Underground’s ticket machines and automatic barriers. Part of BFI collection "London on the Move". Informational film about the London Underground’s ticket machines and automatic barriers. Part of BFI collection "London on the Move". Informational film about the London Underground’s ticket machines and automatic barriers. Part of BFI collection "London on the Move". Informational film about the London Underground’s ticket machines and automatic barriers.