Tube 'last round' drinks bash due

The ban will be implemented across London's entire transport network

A party is due to be held on tube trains to mark the eve of London's public transport alcohol ban.

The "Last Round on the Underground" party, which organisers say will begin at 2100 BST on the Circle Line, has been advertised online.

Organisers have asked revellers to behave themselves, but the Rail, Maritime and Transport (RMT) union has condemned the event as irresponsible.

The alcohol ban also applies to buses, the Docklands Light Railway and trams.

From 1 June, open containers of alcohol will be banned with the aim of making travelling on London's public transport network a safer and more pleasant experience for passengers.

'Booze party'

The new policy was announced by London Mayor Boris Johnson shortly after he took office.

People have been invited to bring their own cocktails to the party, but to be civil to other passengers.

Bob Crow, general secretary of the RMT, has warned: "It is pretty irresponsible to organise a booze party on the Tube when alcohol already plays a part in so many incidents."

A spokeswoman for Transport for London said it would be monitoring the party, but was confident it would pass off without incident.

British Transport Police said it would have an increased number of officers deployed on the Underground for a number of events in London on 31 May.