GB & Empire Stamps is an online specialist retailer serving collectors of Great Britain, Commonwealth and other international philatelic material. Its catalogue spans stamps and covers from regions including the British Isles, Canada, Australia, New Zealand, the Falkland Islands, Africa, the Caribbean and the Pacific, alongside selected European and worldwide issues. The site highlights rare and fine items, with a particular emphasis on stamp errors such as missing colours and shifts in colour or perforation. Collectors can browse by country or region, search listings, and shop through featured and recently added stock.

Products include individual stamps, sets, sheetlets, booklets, blocks, first day covers and complete sheets. Listings describe condition and format, including unmounted mint, fine used and cancelled-to-order material, and may provide catalogue references and images or comparisons with normal examples. The selection also includes philatelic literature. Items are offered for direct purchase, with a sale section and a shopping cart; prices can be displayed in several currencies.