Thanks for your replies gents.

Just an update, the jack was placed in the correct place on the sill when the tyre was repaired.
I just had a look at the old rear tyres and they show similar wear pattern as the fronts, but not quite as bad! They had previously been on the front when the car was new and I changed them front to back/back to front at around 12000 miles, car has now done 31000 miles, 8 years old in December.
Glad I got new tyres as I found a long crack on the inner tread on one of the rear tyres!
@GlekkeMatrak yes I checked the pressures, thanks.