What plant is it please?

As I drive around the area, I have seen a lot of small purple flowers at the edge of drives and climbing over walls, I know it's a ground cover plant and I thought it might be Campanula, but I have only seen that in light blue and white.
Do anybody know what it is please? As I would love to have it on my front wall.

Cheers
Trevor

 

Could be an Aubretia(Rock Cress). Grows well over walls and gives great colour.

 

Could be Periwinkle (Vinca)

BM

 

Possibly campanula portenschlagiana, a veritable weed in the South East and I suspect everywhere. More difficult to eradicate than the daleks, but very pretty and fun to deadhead.

 

agree with BM - most likely vinca, as it's a great ground cover plant see http://www.zvrk.co.yu/Slike/biljke/cvece/Vinca.JPG
It's often the variefated version you see, yellow and green leaves, but the flower is pretty much the same

 

We need a photo. I reckon it's aubretia or campanula climbing over walls etc. Vinca likes shady hedge bottoms and the flowers are medium sized mauve/blue not small and purple

 

Campanula portenschlagiana.



Vinca minor.

Hope this helps Gofoit2.

These are taken from the web-is there an issue with copyright for this sort of stuff or do you think its alright?

 

In addition, aubretia is the smallest flower and leaf, about 1/2", campanula is bigger, maybe 1", and vinca is the biggest. Aubretia and campanula form flower carpets with leaves only visible round the edges, vinca is not so densely flowered.