I have been through HotUKDeals and I've noticed that there is a post similar for Sports Direct who were selling up at £4.69 or something, but there appears to be only a very limited number of sizes available there now.
Thought I'd post this since I came across these and thought of HUKD. Sorry if this has come up before or can be bettered elsewhere :B
All shirts are £5, except for the blank (no name or numbers printed) shirt in youth sizes, which is an astonishing £4 (£40 quid off). Even the long-sleeved version is only a fiver.
ALSO, I used a UCAS code found on this very site and got 10% off, making a £5 shirt £4.50 :D