Another U.K. retailer, Clove, reiterated on its website that they will be getting stock of the phone in during March 6th or 7th. Clove has already said that it would be offering the device SIM-Free in the first week of March from its website. As the retailer posted on its site, while it would be nice for Clove to "have Sony's new flagship in stock sooner," U.K. smartphone fanatics will have to wait until after MWC to have the phone in their hand. Some things, after all, are worth waiting for.
source: Clove, Play