Period Glasses - For the whole medieval re-enactmenting thing.
The Historic Games Shop
Gothic Green Oak - authentic period board and dice games.
Herts Fabrics - suppliers of cloth to re-enactors.
Yes, I picked up a load of fliers when I was at Tewkesbury last summer, and am finally getting round to putting all the links together so I can dispose of the actual physical fliers...
Sheffield Space Centre. Just...one of my favourite shops to visit whenever I'm in Sheffield.
King's Christian Bookshop, King's Langley.