This does really get confusing..

So assuming I gathered all the data and compliance sheets for the components and parts used, which should mean that the parts to be sold would already be CE marked or compliant, it still means the final unit has to be tested? - Bummer !!!

I'm awaiting a call from the business section of our local trading standards office (well they are apparently responsible for policing the CE marking) to hear their view point. I'll let you know the outcome