A Bedford retailer that began by taking orders over the phone is set to become the first business to launch on ShopGB as it celebrates 20 years of growth. 80s Casual Classics now has four stores, employs around 60 people, and has built a loyal community around British retro fashion.Managing director Neil Primett said the business took off after the release of ' The Business ', starring Danny Dyer, in 2005.He said: "The film The Business came out…