Thanks, both. It's a charity organisation, who are no doubt tied up in reams of paperwork. None of our other regular venues have ever required this. I have a bunch of stickers, but they want a certificate listing the kit, signed by the tester.
more victims popping up on Bass Players Market UK FB https://www.facebook.com/groups/BassPlayersMarketUK/permalink/3876293265715606/?comment_id=3876694009008865