I just got my car serviced at AMD Essex, I have to mention, they provided fantastic customer service! Anyhows...
1 fault code was found during the service:
17748: Camshaft position sensor (g40) / engine speed sensor (g28)
p1340 - 001 - incor. correlation
readiness: 0110 1101
No engine light on or any other fault lights and car runs fine.
However, AMD tech guy did mention it could be that the chain has stretched.