While in Scotland I saw a flowering vine tumbling over a wall. I uploaded three photos to photobucket of the vine at this link:
That is a Pyracantha, martybee, not a vine. It will produce red, yellow or orange berries later on. They are often grown as wall shrubs and this one appears to have got to the top of the wall, grown over and not been pruned.
Here is a link that might be useful: Pyracantha
Pyracantha also need to be supported firmly when trained to grow up a wall.