From what I could see from its window display, the British shop only sold the sort of stereotypical tourist-oriented tat that you find on sale outside Charing Cross Station. Perhaps if it's open when I return next year, I'll have a look inside to see if it a) actually sells proper British items such as PG Tips tea, Cadburys Wispas and McVities Suggestives Digestives and b) if the proprietor/proprietess is actually British ;)