Rail commuters have welcomed moves by First Great Western to provide extra seats on rush-hour trains to London next week - but they say further improvements are still needed.

Last December, FGW infuriated passengers by cutting the number of fast morning peak trains from Oxford to the capital from six to three.

A month later, the firm was forced to bow to public pressure and introduced a revised timetable on January 15, which introduced an extra fast train at 7.33am and speeded up another service.

Yesterday, FGW said it would make further changes from Monday, including the provision of more than 200 extra seats on the 7.33am service, by introducing a refurbished High Speed Train in place of an Adelante unit.

Zahra Akkerhuys, a spokesman for rail campaign group Ox Rail Action, said: "We welcome some of these changes, but First Great Western is still fiddling at the edges and more still needs to be done.

"A High Speed Train on the 7.33 will free up an Adelante to be used on the 7.05am service, where there's major overcrowding."

The 5.55am Oxford to Paddington service will now be doubled in size, to 10 coaches, and will depart at 5.51am calling at Radley, Didcot and Pangbourne.

Another change being made from Monday aims to end delays to morning peak trains on the Cotswold Line.

The 6.03am from London to Oxford and Worcester will in future depart at 5.52am from Paddington, to try to ensure it leaves Oxford on time at 6.59am, to avoid delays to three London-bound services it passes at loops between Oxford and Worcester.