Ticket office hours at South West Trains (SWT) stations in London and Surrey will be cut by 219 hours a week, new figures show.

At least 20 stations will be affected by the cuts and some will be left completely unattended at night and on weekends.

Chessington South, Wandsworth Town and Berrylands stations are the worst hit, with ticket office hours being reduced by between 20 and 30 hours week.

Ticket offices at Barnes, Hampton and St Margarets will close up to an hour and a half earlier at night. None of them will be open after 7pm.

The reduction in services, uncovered by Putney, Roehampton and Southfields MP Justine Greening, will raise fresh fears for the safety of passengers travelling after dark.

The revelation counters claims by Transport Minister Lord Adonis, who said last month that the Government has prevented major ticket office cuts in London.

"These Government-backed plans will seriously inconvenience thousands of Londoners who use these stations every day," said Ms Greening.

In a letter to the MP, SWT managing director Stewart Palmer attributed the cuts to "reduced passenger growth and an increasingly challenging economic climate".

According to recent reports, SWT is cutting hundreds of jobs to reduce costs.

FULL LIST OF STATION CUTS

Station Current Weekly Hours New Weekly Hours Difference Barnes 89 Hours 25 Mins 75 Hours 14 Hours 25 Mins Berrylands 44 Hours 24 Hours 20 Hours Brentford 34 Hours 10 Mins 20 Hours 14 Hours 10 Mins Chessington North 41 Hours 55 Mins 31 Hours 10 Mins 10 Hours 45 Mins Chessington South 46 Hours 48 Mins 17 Hours 30 Mins 29 Hours 18 Mins Earlsfield 88 Hours 15 Mins 87 Hours 30 Mins 45 Mins Fulwell 44 Hours 26 Hours 40 Mins 17 Hours 20 Mins Hampton 90 Hours 73 Hours 17 Hours Hampton Wick 40 Hours 10 Mins 37 Hours 15 Mins 2 Hours 55 Mins Hounslow 42 Hours 15 mins 40 Hours 35 Mins 1 Hour 40 Mins Malden Manor 44 Hours 27 Hours 30 Mins 16 Hours 30 Mins Mortlake 88 Hours 84Hours 5 Mins 3 Hours 55 Mins Motspur Park 49 Hours 37 hours 30 Mins 11 hours 30 Mins New Malden 89 Hours 30 Mins 88 Hours 20 Mins 1 Hours 10 Mins Raynes Park 96 Hours 50 Mins 90 Hours 50 Mins 6 Hours St Margarets 82 Hours 40 Mins 76 Hours 10 Mins 6 Hours 30 Mins Strawberry Hill 85 Hours 20 Mins 76 Hours 45 Mins 8 Hours 35 Mins Tolworth 34 Hours 10 Mins 20 Hours 14 Hours 10 Mins Wandsworth Town 43 Hours 30 Mins 21 Hours 40 Mins 21 Hours 50 Mins Whitton 90 Hours 89 Hours 5 Mins 55mins