I remember the magazine adverts for the Dynamow when they were first introduced in 1989 (I think) – I also had an original brochure at one point but not sure what happened to it.
May need further research but I do recall reading that the Dynamo was developed by Denis Selby of G.D.Mountfield after he sold the company in 1985. They may have been made in Europe as Mountfield had investment in many manufacturing facilities including in Italy such as Granja.
Production numbers may have been low, and I’m not sure if they were available anywhere else across Europe or just in the UK.