Hi Jay....
Eclipse were the company brand of Bike UK, a shop based in Villiers St, near Charing Cross in London in the mid-80's. Run by an Aussie called Greg, along with Dick and Anita (who later formed Apex Cycles in Clapham, which is still there), it was based under the arches in the old wine vaults. They had their own range of bikes, commuting and mountain. The original Canyons were built by Jeremy Torr (who build the Cleland Aventuras for Geoff Apps, and later the Rat), and then by Dave Clarke. 531, full XT, 531 bullmoose bars, ACS nylon rims (!), very early stuff. I bought mine in early '84, cost me £525, I still have the receipt! I did all the original Fat Tyre Five events on it, and the Wendover Bash, events like that. I think my ex still has all my old photos in the house, I must get them back off her....lots of nostalgia there!