What are these shrubs?

[Mirocat]

Do you know what the larger shrubs are? I'm looking for shrubs that will look nice alongside silver birches.

Thank you :)

The one on the left in the first pic, looks like Philadelphus Aka Mock Orange. Very fragrant, and flowers in May/June.

There's a Euphorbia and a Rogersia underneath them . The purple Pom poms are alliums and I think that's Phlomis at the front .

Large Hebes such as Sapphire which is evergreen and grows about 1.5m looks good and the purple flowers compliment the silver birch.