Viburnum Rhytidophyllum
There is a large Viburnum Rhytidophyllum just through the grass gap, on the far side of the Island Bed. It has creamy white flowers in spring, and the leaves are distinctly corrugated. Unfortunately I'm allergic to the flowers - they make me sneeze.
This is an original shrub-tree, planted in the Island Bed when I first arrived. To be truthful I'm not a huge fan (handling it makes me sneeze), so Non-Gardening Partner has reduced it to knee-high. Looks like it's still growing well, though!
viburnum leaves