It's got 31000 miles (50.000km)on the clock, Chris.
Thanks Cereal, that's a possible explanation. Though it made the expensive KLANG sound a couple times. Later that evening it started fine. As it did today.

I wanted to take it out for lunch, the KLANG sound made me take the daily driver and off course, what car passed me on route to the restaurant? A **** Morgan Aero 8! banghead

Unbelievable.