bedraggled":2yejx28u said:Unless it's an oddball, no number on the bottom bracket would pretty much rule out an Ilkeston or Worksop frame.
The other common location for a serial number is the back of the seat tube at the top.
The colour scheme was used on just about the whole range of bikes from the cheapest to the most expensive, probably better to look for other signs of quality such as Campagnolo drop outs.