Certainly can do that for eternal gratitude.
Majestic usually stock it. It's now called Pimms Vodka Cup and I think it's on special offer at the moment at about a tenner a bottle. Try it with dry bubbles drunk (which you will be) from a silver tankard.
The land of the singing postman must be East Anglia ?
I know that Norwich Majestic do not have it in stock but Cambridge did this morning.
Incidentally, as a matter of interest:
Pimms 1=Gin. 2=scotch. 3=brandy. 4=rum. (yummeee) 5=rye (yuk)
6=vodka.
Hope that helps. Happiest of sloshing to you.
cc