Indeed, thank you. For those that don't have stock near them it might be worth filling in an online "Tell us about a lower price" form on amazon.co.uk. I've started the ball rolling :) http://www.amazon.co.uk/gp/product/B001KVE6TE/
Thanks applemint, I bought one at the weekend from my local Argos. Over the moon with the thing actually as this one seems sharper and faster focusing than my 100-300 was. Really chuffed with this bargaintastic wee beasty.
Also 1 in stock Walthamstow, London. However any PCWorld/Currys within London will price-match at £193 (10% off the difference too!). So anyone in London should leave that one in stock for everyone to price-match off