Looking for a potential source of acrylic paint that I could buy in shop, rather than face possible problems having them delivered by the Royal Mail, I mentioned it to a friend at work who's a railway modeller and he advised me that the Ian Allen Bookshop in Lower Marsh Street , London SE1 (Just south of Waterloo station) not only stocks railway books it also stocks a reasonable selection of odds and ends aimed at the railway modeller, including the complete range of Vallejo Model Colour Acrylic paints. I went and had a looksee this evening after work. The Vallejo paints are £2.10 a pot. They also do Humbrol enamels, a fairly comprehensive selection of scenic accessories(unfortunately not static grass or tufts though) brushes and modelling tools. Certainly worth a look if you live or work in London.