Thanks for your reply!!
I took my sd card to work and printed the same file and printed fine, to rule out software etc
I feel like an idiot! so there quite a build up of glue stick on my glass bed.... i use a BL Touch
cleaned the bed tried the print, still bad
Lowered my offset by 0.1 (from -2.4 to -2.5) and its perfect!
Total school boy error, but thanks for suggesting all the above ๐
Cheers