Dear Wikimanians,
People have asked about the Wikimedia UK branded sweet in the delegate bags. It is a traditional British delicacy called rock https://en.wikipedia.org/wiki/Rock_%28confectionery%29. One of our vegetarians has checked and it does not contain either gelatine or cochineal or anything else that would make it unacceptable to vegetarians or indeed vegans. However dentists and diabetics may be less happy as it is rather high in sucrose.
Regards
Jonathan Cardy aka WereSpielChequers.