Had a load of trouble checking out at thehomebrewcompany. It's seems they've gone to Paypal only. After two days of frustration I finally deleted/removed everything I had ever had to do with Paypal and started again. This time it worked. I've got no issues with THBC, but Paypal is an organisation I'd prefer not to have to deal with. If GEB had stocked Simpson's, it would have been a no-brainer.
Having said that. My order (of 19 items) was marked as "dispatched" within an hour of placing it. So it's swings and roundabouts and fair does to Shane and his staff. MM and BrewUk seem not to be rising to the mark.