Ford Mondeo IV - Slow puncture and upcoming service - FotheringtonTomas
>> Because of how low the tyre was and the apparent slow rate of air loss
>> I would guess that I have driven quite far with whatever damage there is -
>> so perhaps a new tyre is likely.
I am not sure how you come to that conclusion, unless you've been driving with it flat.
Just nip down to National or KF or somewhere and get them to fix it, and avoid becoming Rattly.