A new – and slightly quicker – version of the supercharged Jaguar XJ Supersport. Power remains the same, but the Speed pack brings some minor cosmetic changes and a more permissive speed limiter – now ...

There's a bit of a swagger around Jag at the moment that's enough to have one coming over all patriotic. Seen in all the right places from outside Number 10 to the royal wedding, the XJ has ...

The Jaguar XJ Supersport with Speed Pack is Jaguars fastest saloon yet. Adding the new Speed Pack to the V8-powered, Supersport version of the XJ luxury saloon raises its electronically limited top ...