Not sure how to go about this, but Iâm sure Iâll be told if I am doing it wrong. I have two adult tickets to the Royal Marines Beating of the Retreat at Horseguards in London on Thursday 11th June which starts at 18:15 be seated. By 18:00 The tickets have a face value of Â£12:00 each and are for seats in B block section 1. As I canât go would anyone like these in exchange for a suitable donation to Holidays For Heroes. Iâll say ending at 22:00 on Sunday 7th June so I can get them to the winner in time.