P.s. Should be only available on the Saturday/Sunday of each weekend, but you can actually get the last train on Friday and the first train on Monday too

Just select the weekend dates, then click 'earlier train' / later train buttons on the journey details and they pop up!
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Ticket Collection
You have chosen to collect your tickets from MANCHESTER PICCADILLY your FastTicket Reference is ,,,,
Journey 1: MANCHESTER PICCADILLY to LONDON EUSTON
Ticket Type: COMP STANDARD
Route: This ticket is only valid when travelling exclusively on Virgin Trains.
Outward Journey: 20/06/2009
departs MANCHESTER PICCADILLY at 08:35 travel by Train service provider VIRGIN TRAINS to station LONDON EUSTON arrives 10:42
Coach: C Seat: 11
Journey 2: LONDON EUSTON to MANCHESTER PICCADILLY
Ticket Type: COMP STANDARD
Route: This ticket is only valid when travelling exclusively on Virgin Trains.
Outward Journey:
22/06/2009departs LONDON EUSTON at 06:17 travel by Train service provider VIRGIN TRAINS to station MANCHESTER PICCADILLY arrives 08:28
Coach: B Seat: 28-------------------------