Tree Identification website?

[Gutzy]

I have three trees in my garden in the Peak District which I cannot identify using any website I have found. Nor are they identifiable using Alan Mitchell's Trees of Britain & N Europe.
I think one may be a smooth-leaved elm, except that the petiole is V short (5mm max).
The others, I have no idea. The leaves are a bit like a fruit tree, but larger, and there is no fruit.
Is there a website that is good at identifying difficult trees?

[Hobjob]

Originally Posted by Gutzy

I have three trees in my garden in the Peak District which I cannot identify using any website I have found. Nor are they identifiable using Alan Mitchell's Trees of Britain & N Europe.
I think one may be a smooth-leaved elm, except that the petiole is V short (5mm max).
The others, I have no idea. The leaves are a bit like a fruit tree, but larger, and there is no fruit.
Is there a website that is good at identifying difficult trees?

Well I'm prepared to bet you will get them ID'd here on WAB from photos
But
Please give us whole tree, leaves, bark, fruit, flowers etc..

[elleme]

I've found the following website handy at times, but it doesn't include anything unusual. Hainault Forest Website

You'll probably be best off uploading a couple of pics including closeups of the leaves and what the bark looks like to this site, if you can.