I've just been given a barcode with no printing option. Do I take a picture of it? Print screen and print it?

I think you can scan your phone at the turnstyles not but not 100% sure.

Does it say if its your ticket? If you make sure when your there you have some proof of purchase you should be fine. Could always tweet @thorpepark they will know for sure

Yeah it said it was my ticket! Thank you though - I will tweet them