Where can I get an image off an SD card blown up to A3 size on good quality paper? does anybody have any ideas?

Prontaprint used to be the stock answer for anything unusual but most printer firms are fully digital these days so you could just shop around.

DPInfo.co.uk compares pricing from a number of printing suppliers.

It will have to be a very sharp image to print om A3. You might be well advised to print half of it onto A4 to assess whether it is worth spending a load of money on an A3 (I assume you can print A4 on a standard printer)`

I found the new "Office Outlet" on the Rock Park Estate, does all enlargements, looks very good. Thanks for answers.