Google the local auction houses in your area and check forthcoming sales. Sometimes they have Arms & Militaria sales every few months. These are normally better value than some of the big boys, like Holt's, as percentage charges are often lower. Remember VAT gets charged on the commission, and some imports will have another lump of VAT added. Others like Wallis & Wallis also specialise in gun sales; they handled the Webley museum sale in 2006.