They were selling the Silver GX7 with the 20mm for £399 (or the black version with 14-42 11 at the same price)
There was a special show only offer of double cashback from Panasonic (by redemption) so the £299 was after £100.00 Cashback
Bought one myself as it seemed to good to miss and I'd never had the GX7
They had really good deals on GH4s and other models too
Olympus deals were a bit thin on the ground though compared to previous years