Guelder rose, V. opulus, flower just coming out

Lovely. I thought I had a Viburnum opulus, but on mine the flowers are globular, so I'll have to think again!

You've probably got a named variety Sheila. There's one called v.opulus 'Sterile' and another called 'Roseum' (and there may be others for all I know) that have globular flowers.

This one came as a very cheap bareroot sapling intended for inclusion in "native hedging". I bought some very small saplings (whips) that I planted a couple of years ago. They've all survived (touch wood) and are starting to take off now they've got settled.

Ah, right. I like to find whips too . . . got several copper beeches a year or two ago: good ones to bonsai.