I am in the market for a 3C8 035 730 D Bluetooth interface I notice there is another one available which has a'E' suffix does anybody know what this one has that the other one don't.thanks

I looked into it and from what I read I think its just a newer version of the same unit with no real differences in functionality. It might I guessed be a bit quicker, but should not warrant much more cash spending on it over the 90odd quid the D unit can be had for on eBay.

The only ones on ebay seem to be from Germany I haven't seen any sourced from the UK is that Normal?

You will pay more for a UK sourced one. I got mine from Poland, no issues.