Some of the brits there were:
@slobberchops and his wife @bingbabe, @revisesociology, @ezzy, @nanzo-scoop, @cryptogee, @redrica, @teodore, @gillianpierce, @shanibeer, @adetorrent, @starkerz, @slayerkm, @supertraff, @gmuxx, @camuel

That could be over 10% of the active ones you have found.

I also just found @screwballpsyche who is in Scotland, but he wasn't at Steemfest.