Hi - my XF Sportbrake 3.0 is making a slight out of ordinary growl and rattle when accelerating over 50mph. I don't know enough about engines to know what the actual cause is.

Can someone recommend a mechanic or repairs around the Romford / Essex area who can check it out to determine the problem? I can take it to Jaguar, but don't want to pay over the odds for the check-up.

Thanks in advance.

Ted XF