If it's the 4.0 then it's ULEZ compliant.
The 4.6's aren't.
However, because the P38's are only Euro2 compliant (and not Euro4) you have to write to Land Rover and ask for a Certificate of Conformity. If it's the 4.0, this should demonstrate that the NOx is less than 0.08g/km. I think the 4.0 is...