I just ordered this last night, gone 6pm - it arrived this afternoon!
Jessops are doing the Lowepro Flipside 300 for only £41.95 + Delivery
Use code BAGS&CASES10 to get it for £41.74 including Delivery
It's a very sturdy back pack, and after having a look at the 100 and 200 instore yesterday, it's alot more roomier.
Online only by the looks of things.