Tree identification?

Hi all.

I've got a tree on the edge of my plot with small purple berries/fruits on it and I was wondering if anyone could identify what kind of tree it is? The only thing I think it could be is Rosehips, but I thought they were red rather than purple...I'm sure I'm probably very wrong!
Thanks
Andy

It seems to have rose leaves, rose thorns and a rather strange rose-hip. I'm with fatcat on this one.

yes it's a rose and if you look at this link you will find out all about making schnapps from those hips 

http://www.danish-schnapps-recipes.com/rose-hip.html

enjoy 

That's probably about as far as we might get then...

           a thornless, black hipped rose

So... what would help is to know what the flower looked like before the hip appeared.

Well according to the catalogue provided by the hedge plant supplier we used, it could be one of these:

"Rosa canina "Dog rose" Strong prickly stems, scented, pinkish-white flowers and bright red, egg-shaped “hips”. Good for mixed hedges.

Rosa rubiginosa "Sweet briar" Vigorous, dense and prickly. Fragrant pink flowers all summer. Long lasting red fruits. Also known as “Eglantine”

Rosa rugosa "Ramanas Rose" Strong, dense and prickly. Fragrant purplish-pink flowers and red fruits. Excellent for coastal planting.

Rosa pimpinelifolia "Burnet or Scotch Rose" Small, dense, prickly shrub with small pinkish-white flowers and red-black fruits. A common plant of coastal areas. "

It sounds like the Scotch Rose to me.....

I know burnet/Scotch rose from the wild and have never seen it more than knee height = and it's usually almost furry with thin bendy thorns. I think it might be some variety rather than a species?