It is somewhat likely that you will experience these codes during the course of long-term ownership. The codes indicate "catalyst efficiency below threshold". These codes can be transitory in that they sometimes self-cure after several driving cycles or ECU rebooting. But other times the codes will persist, which causes us to seek official Jaguar assistance.
Saw this problem noted at p. 30 in the January '13 issue of "Jaguar World Monthly". The commentator, Clive Kirton at Nene Jag Specialists said, "This problem is particularly difficult to pinpoint as it can be caused by the oxygen sensors, mass airflow (meter), engine air leak or the 'cat' itself - beware!"
The inexperienced tech might be inclined to first replace your cats, at a huge expense, simply because the codes seem to direct one to this source of the problem.
My own experience with this code was an air leak, which occurred at the mass air flow sensor when I was experimenting with a revised intake. Air leaks often present themselves after work is done on the intake tract. They are very hard to find, but there is a neat tool that some shops have: it is a small smoke generator, which shoots out a tight stream of smoke. Any air leak will cause the smoke to be drawn into the motor, isolating the leak. I think the first place to search then is for an air leak.
Then, progressively I would test oxy sensors and finally and lastly the cats themselves.