Taller shrubs that reach about 1m for the back of a raised bed.

[DaveTheOnion]

I am just planting up a new raised bed. I need some bulkier plants for the back of the bed that will give some height and structure.
I have seen a really nice choisya (apple blossom) which I think would work well but wondering if anyone could recommend some other plants that might work.....maybe a smaller variety of hydrangea or something similar.
The bed has no theme, I just put the plants that make me happy in so its a hotchpotch of colours and styles I've got geums, alliums, agapanthus, aquilegias, achamilla mollis, sedum, rudebeckia, Euphorbia, wall flowers, poppies, peonies already. So anything that might look nice with them. I have started putting the plants in place to arrange and see what looks nice where but it definitely needs some bigger substantial plants.

A Hebe will grow to a metre or higher quite quickly. You might need to keep it trimmed down.

Hiya- assume you are going for evergreen? If it is near your door and has some shade then I can never resist a Daphne- there are all different sorts (most are evergreen but you can get glossy dark greens and variegated). Once established (which can take time) most flower prolifically in February for a couple of months and the scent is amazing. There are some new later flowering varieties too. They are quite slow growing though and can be fussy. After that I also love Choisya- Aztec Pearl is my favourite as you can encourage it into a ball shape and mine flowers twice or sometimes 3 x a year- I'd say now fully grown it is 1mx1m. Escallonia is also good- evergreen but with lovely flowers- pretty sure there is one called apple blossom with pink flowers actually. Agree Hebes are good- so much choice there. I find some Hebes are very frost sensitive so fancy ones need to be sheltered.
Grasses can be good too- I have Calamagrostis Karl Foerster and it's just over a metre and provides good structure in Winter- it's a different look perhaps.
If you're undecided or just want to experiment, you could always put some obelisks/trellis and grow a clematis or sweet peas up that- or even grow some green beans (or tomatoes if it's a sunny spot)!

Good Luck!