Hywel wrote:
In article , Ben says...
Hi

Can anyone recommend an online supplier of signs. I've tried the local
hardware store and B&Q and a couple of local sign shops, but none of
them have what I'm looking for. Basically I'm having trouble with kids
on motorbikes messing about on my parking area, so I need a sign that
says private parking, no motorcycles (or 2 separate signs would do).

http://www.uk-safety-signs.co.uk/parking-signs.htm

How do you plan to enforce it?

Add another "Caution, oily road" sign?