One of the big spring favourites Spirea x arguta out in early spring. A feathery tall shrub with a cascade of bridal like white flowers. It's a tough shrub. I seam to be able to grow it everywhere. I think you could make a hedge of it as I like the soft foliage but it is deciduous.
Often referred to as the Bridal Wreath bush due to its arching branches swathed in white dainty flowers.