Although tickets for Sunday's Heineken Cup game at the Madejski Stadium have gone off and been returned to London Irish, Ospreys fans can still purchase tickets direct from the Exiles.
They can be bought online at www.london-irish.com, or by telephone on 0844 239 1871.
Tickets will remain on sale right up to kick-off, but fans intending travelling to the game who have yet to purchase should be aware that the cost of tickets rise by £5 when bought on match day.