Just looking at your other thread Dougie.
Did you purchase the kit to include the 18-55 or 18-135 lens? I bought a camera off RGB about 18 months ago, and I found them really good to deal with. If you are in any doubt then get in contact with them. This will only niggle you for ever.
Regarding whether it has been used, a possible way to check is to see when you take the pics what number it starts with. I know that the counter can be reset, or that sometimes it can take the comtinuation number from your memory card, but worth a look.