Had a look at my discs and it was pointless asking this question.
The disc is scored and pitted on the outer 1/4. Think changing the pads & discs is the best thing to do.
I should have really had the bloody things off over the summer and got this sorted but I been too scared just incase I break anything, but I don't trust a garage to do it either! It's about time I grew some balls and gave the car a major service and sort the brakes out.
I've been so worried about breaking it I took it to Ford for an oil change which emptied me of £90. I could have done it myself for £30

Also Ford Pads & Discs...
Front Pads - £53.31
Rear Pads - £36.84
Front Discs - £90.06
Rear Discs -£81.88

Total = £262.09
Total +vat = £314.51

Pagid Discs & Pads...
Front Pads - £44.34inc VAT
Rear Pads - £37.80inc VAT
Front Discs - £81.48inc VAT
Rear Discs - £82.80inc VAT

Total inc VAT = £245.82

Mintex Discs & Pads...
Rear Discs & Pads kit - £73.99inc VAT
Front Discs & Pads kit - £82.50inc VAT

Total inc VAT - £156.49

Plus I got to buy a Caliper wind back tool. Think I'll buy a decent one though as I will probably use it a fair few times so wont count the cost of that but it will be about £50.