I assume the leisure parking area is for them only and as such can be deemed to be private property. If this is the case the stop and report requirement of road traffic law does not reply.

One might as a last gasp report it to local police in case driver of damaged car makes a report.

Other than that not much one can do. Suspect driver of other vehicle will not be aware of damage until finding some considerable time later - have hissy ft - then do nothing.

dvd

I assumed this was the case, but equally the only information she has about the car was that it was big and black, Id have thought that that gives them little or no information. Do the police actively investigate these or is it just put into a system and should someone come forward, it gets flagged up?

Also, all I can think of is that the owner of the other car simply hasnt noticed, otherwise I'd have gone into reception to ask the question if nothing else.

Assuming 101 would be ample enough in letting police know, or is it better to go in?

I would make the report in writing - email would be entirely sufficient. That way it is entirely on record and there is no risk of prosecution for failure to report, should it ever come to that.

I would do the same for the Leisure Centre. Again, it shows that you have taken 'reasonable steps' to find the other owner, and it is on record.