No problem Dave, it's not the worst thing I've ever been called...! You might want to think about investing in a code reader yourself, they range from about a fiver for a bluetooth device up to, well, as much as you want to pay but even a cheap bluetooth one will give you most codes in your PCM if used with free or cheap software you can download to your smartphone. The good thing is you can go armed to the garage knowing most of which codes are present and with a bit of Googling and YouTube actually understand what they mean, a fiver has to be better than 135 quid a pop. 😊
Regards, Kie