Albert Zains' Flash Special was, in fact, a modified Cooper Mk XI. The story goes was that this was done to enable Albert to fit but he wasn't an especially big man, had driven earlier Coopers so should have been able to fit a standard car. Albert ran a series of launderettes and dry cleaners in West London so perhaps the name derives from this? The principle change, undertaken by Coopers themselves was to widen and lengthen the cockpit area by 2 inches. Special bodywork was made to fit with a wrap around screen and a Norton engine was used. At some point in 1958, Albert had a serious accident, although the car was undamaged and Albert continued through to 1960. The Flash passed to Frank Bruce-White in 1969. A Triumph twin engine was fitted in 1970.
Some known results:
If anyone has any more details or photos, please get in touch.