eBuyer express had listed the iPad 4 for £299 & sold out quickly. Based on its previous listings, the deal will come back within a few weeks:
http://www.ebay.co.uk/itm/Apple-iPad-with-Retina-Display-16GB-Black-A6X-Dual-Core-CPU-9-7-iOS-/271099067899?clk_rvr_id=410581420710&afsrc="1&nma=true&si=B%2BvosuNE%2FUGudk6WJJJVzOxb%2FhM%3D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557"
http://www.ebay.co.uk/itm/Apple-iPad-with-Retina-Display-16GB-Black-A6X-Dual-Core-CPU-9-7-iOS-/271099067899?clk_rvr_id=410581420710&afsrc="1&nma=true&si=B%2BvosuNE%2FUGudk6WJJJVzOxb%2FhM%3D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557"