I'm not saying that they will fit, but that would be the nearest tyre size to maintain the correct circumference for speedo and odo accuracy.

Try the calculator on the linked website to see for yourself!

There could also be implications with regard to your insurance cover if a non-standard tyre size was fitted. Don't forget that any changes to the spec of your car should be notified to comply with disclosure requirements and will probably attract an increased premium. UK insurers will try anything to get out of paying in the event of a claim.