If you want the best for your Jaguar leather seats, dash, etc. then Connolly is the way to go. I bought this when I had my 2002 XKR-100 (sold a few months ago) and no longer have a car with leather. I used the cleaner and conditioner once on all leather components in the car and once on just the front seats. There is still over 3/4 of each product left in the containers. On Ebay, this runs about $60 for the kit, but includes applicator and micro fibre cloths which I'm not including.
Will sell for $36 including priority mail shipping in the lower 48.

 

Lots of lookers...no takers...?
OK $29 under the same terms as above.