Shrub with white flowers? What is it?

I have a shrub in my garden. It's deciduous, about 10-11 feet tall, has a grey rough bark, beautiful 5-petalled white flowers. Almost looks like Dog Rose, but it definitely is not a rose. Can anyone identify it please? Picture attached.

 

It's a rose... I've no idea which species or cultivar but it's definitely a rose (this sounds familiar...)

also

 

Thats a very nice Dog Rose Macbone, should get some nice hips from that in the autumn.

I love rose hip syrup, on my last bottle from last year now, had some on my ice cream yesterday

 

Thanks to everyone who has responded, but this shrub has never, in 25 years had hips, there is no evidence of one single thorn, it has a thick heavily grooved, grey bark, it doesn't have ANY perfume. So, I'm still at a loss to know what it is.

 

The case against it certainly seems conclusive but it still looks like a rose! If it doesn't have hips, what does it have instead when the flowers die off?

Well established roses do have very gnarled and furrowed trunks.

 

macbone, botanically the structure of the flower in your pic is that of a rose!
The leaves, buds, calyx, petals and stamens all fit.
Rosa. Common name Rose.
I am not saying this is YOUR rose but it may be.
Rosa virginiana alba. It is apparently thornless.

There are literally 100's of different species and hybrids. Some have gone out of fashion and are no longer available to buy any longer, but may still be found in gardens.


Google Image Result for http://www.rosesloubert.com/collection%20loubert/2002/rosa%20virginiana%20alba.jpg

 

Further to my previous pics

Thanks for your further help. I'm still having difficulty with this one.
This is a close up pic of the leaf. As you may see, instead of 1 central vein from the base of the leaf, it has 3 main radial veins from the base which then have smaller veins emanating from them. Also, the texture of the leaf is MATT. Roses, in my experience have leaves with a single main vein from the base and are GLOSSY. In addition, most rose leaves I've seen are more uniformly serrated (almost like a saw blade) and tend to be more roundish than longish if you see what I mean, whereas this has more gentle, and on some leaves almost none existent serrations and is pointed rather than rounded at the tip.
My missus thinks it's a sp. of Philadelphus, and indeed the triple vein thing looks kinda like Phil but the perfume is non-existent, and I thought all Phils supposedly are strongly perfumed, or am I wrong?

 

What a cock-up!

I'm so sorry, I've had you on a wild goose chase. The pic I originally attached (I now realise) was a photo of an old dog-rose in my garden and the picture I should have sent, I am now attaching. You were all exactly on the money - it was dog-rose. If you can find the time to take a(nother) look and give me a view, I'd be grateful. As I said with the leaf pic, my Missus thinks it's a form of Philadelphus, but I don't know as it doesn't have any perfume.

 

I agree with shiney.
2nd shrub with 4 white petals is Philadelphus sp!
Probably Philadelphus coronarius. Common name Mock orange.

http://www.discoverlife.org/mp/20q?search=Philadelphus+coronarius

http://www.buckingham-nurseries.co.uk/acatalog/product_10257.html

 

Sadly, not all philadelphuses have scent, as I discovered after waiting years for one to flower.

 

Oh well, I might as well post the picture of this other white flower...

cistus aguilarii immaculatus
pic source: compagniadelgiardinaggio.it