The leaves don't look like evergreen leaves. It looks like a Viburnum opulus (Guelder rose) to me. There are some "cultivated" varieties that have round balls of white flowers (eg v. opulus 'Sterile') and more natural forms that have a flat plate of white flowers, more like an elder.

If I'm right it should have translucent red berries in autumn.

I hope it does. I was very disappointed to discover too late that mine was the sterile one, and I bought it because I love the berries. Ah well, we live and learn.

I thought it was guelder rose too. The wild ones are really lovely round here this year---full of berries (where the council hasn't had them hacked off!) Such a shame and a waste of food for our struggling bird population.

Thank you for the info. Does anyone know how high it grows?

That depends on how high or low you prune it! Left alone, my information says it grows to about 4-5 metres. It's a good hedging plant and can be cut to the size you want it to be.