The company said a review into the situation was under way

Ed Vaizey, MP for Didcot, has invited politicians and representatives from First Great Western to attend a rail summit this week.

He is among three MPs who have described rail services in the area as unreliable and overcrowded.

First Great Western said a review of the situation was under way.

'Disgruntled commuters'

In a statement on his website, Mr Vaizey said he had received dozens of e-mails and letters from "disgruntled commuters" complaining about late and overcrowded trains over the holiday period.

"It has been a complete and unmitigated disaster, no doubt about it", he said.

"If commuters could have their say, I think they would vote for a return to the old timetable like a shot.

"It may not have been perfect, but it was miles better than what we have got now".

Mr Vaizey, who invited Alison Forster, chief executive of FGW, to the rail summit, said he hoped the meeting would show what the company was doing to solve the problem.

We will be announcing some further changes to the timetable Adrian Luck, FGW

"We need to give commuters hope - many have switched already to coach and car. They deserve much better", he said.

Adrian Luck, of FGW confirmed Ms Forster was due to speak to Mr Vaizey later in the week.

He told BBC News: "We have had a lot of customer feedback about the new timetable and as a result of that feedback we have conducted a small-scale review of certain issues that have been brought to our attention.

"We will be announcing some further changes to the timetable as a result of this review in the very near future."