The film is filled with director Kevin Allen's family appearing in tiny roles. His mother and several aunties appear early on talking to a taxi driver, a uncle is the man getting a hand-job in the massage parlour and brother Keith is the farmer who eats a spiked hot-dog.
The scene in a restaurant (which follows the scene where Greyo and Terry Walsh meet the English drug dealer outside Swansea train station) was filmed in a restaurant called "The Espresso". In real life geography this location makes perfect sense as the restaurant itself is directly adjacent to the train station and there is, in fact, a plaque mounted by the side of the table where the scene was filmed.
"Llanfairpwllgwyngyllgogerychwyrndrobwyll-llantisiliogogogoch" is the name of a town in North Wales. The name translates as "The church of St. Mary in the hollow of white hazel trees near the rapid whirlpool by St. Tysilio's of the red cave".