London mayoral candidate Boris Johnson has unveiled his plans to tackle overcrowding on London's public transport network.
The Conservative candidate pledged to tie transport operators into no-strike deals and bind London Underground to independent arbitration when negotiating pay settlements.
Last year, London commuters faced chaos as underground maintenance workers staged a three-day strike, resulting in widespread cancellation of tube services and severe overcrowding on buses and trains.
The National Union of Rail, Maritime and Transport Workers (RMT) says Johnson's plans are implausible.
"Boris Johnson is living in cloud-cuckoo land if he believes this kind of approach could ever work," the RMT says.
"RMT does not sign no-strike deals and would never give up its right to strike."
Johnson also promised more police on public transport and vowed to reintroduce Routemaster buses, removed by current Mayor Ken Livingstone.
Livingstone says Johnson's plans are "chaotic" and "would be a disaster for the city".
By Elizabeth Clifford-Marsh
