[Martin Bush]

Those are good sites Will. I've also found some more - one of which offers replica keyboards in which you can house a Raspberry at what I consider a reasonable price. They are made abroad on an individual basis I think so I will have to work out if that would work for me.

Since starting this thread I have had a couple offers locally of Raspberry Pis to borrow and have a go with and I think I will give that a go.

Ultimately I would like an original device simply because I like bits of vintage kit, but I can wait for the right one to present itself.