Nick, that link is basically saying the same as what i posted above. As for different tyres on different axles it has no bearing. What they are interested in is that the tyres are not mixed radial / cross ply, have the correct tread depth, no damage to side walls. I had a accident 2 years a go (non fault). When my car was inspected one of the first things the 3rd parties insurer checked was my tyres. I was there that day and the checked inside / outside tyre walls and tread depth. They wrote down the make of tyres on all four wheels and tyre condition. The report submitted showed different tyres on the front axle compared to the rear but stated all were in good condition.
Tyres are something i take seriously and inspect them on a regular basis. I will contact my insurance company tomorrow to see what they say.....if i am wrong then i will openly stand corrected and post the comment here.
I guess for those concerned about tyres they should simply contact their insurer and ask for advice.
I just re-read the link you put up Nick.
As can be seen, often motor insurers will not charge an additional premium when their insured customers use winter tyres, provided that they meet, and are fitted in accordance with, the vehicle manufacturers’ specifications and are in a roadworthy condition.
This means that providing the vehicle is fitted with the correct size.
This can be a can of worms......My car (Vauxhall Astra) when i asked Vauxhall which tyres are the right size they informed me that the car can have either 185/65/14 or 195/60/15 fitted. The reason i asked them was because i went to Kwik Fit to have new tyres fitted and they told me i had the wrong size on the car (195/60/15).