This was Pirellis response - Voicey - you were far more helpful!
Within UK legislation there are no regulations which prohibit the mixing of different tyre patterns, speed ratings, brands or fitments.
As we produce tyres specifically designed for particular vehicles, we are only able to recommend that they are fitted to the vehicles they have been tailor made for and what the vehicle manufacturers have approved. As we do not try and test them on any other vehicle makes/models, we are unable to comment as to how there will perform.