CHILTERN Railways added single carriages to its busiest trains this week to try and tackle overcrowding – but admits some passengers will still not get a seat.

The route into London was described as 'misery' by Beaconsfield commuters last week, after the £250m launch of an line was blighted by packed trains and signalling failures.

An extra carriage has been added to the 7.32am train into London from Beaconsfield, with the 8.01 due to get an additional carriage from next week. This has added 90 seats to both services, which also stop at High Wycombe.

But the rail firm says some passengers will still not get a seat on the 8.01, with 'regular standing' still expected on the 7.32 once it reaches Gerrards Cross.

In the evening, the 18.25 back from Marylebone now has an extra carriage, while the 18.22 has also begun stopping at Beaconsfield.

After a three day survey, a spokesman for Chiltern Railways said there are three morning trains with a surplus of seats, and it will be looking at how to use this capacity.

She also pointed out that signalling problems have caused much of the overcrowding over the past weeks and the company “continue a ceaseless drive” to solve these issues.

She added: “We are all too aware that recently we have experienced a higher than acceptable number of disrupted days. At times of disruption overcrowding occurs due to fewer trains attempting to cope with regular passenger volumes.”