Leaving Friday 3rd February 2012 from London Marylebone at 14:37 and arriving in Birmingham Snow Hill Station at 16:21. (Chiltern Railways)
Returning on Sunday 5th February 2012 from Birmingham New Street at 17:10 and arriving at London Euston Station at 18:37. (Virgin Trains)
Both are direct trains.
There is also a room available for one night (Friday 3rd February 2012) in the Travel Lodge in Birmingham for 3 people for an addition £24, which would be £8 each.