Having difficulty indentifying this shub, which is growing in another hedge. It has 4 petals and hangs in bunches from the plant stems.
Looks like wintercreeper (Euonymus fortunei). Here we see quite a few old, partly reverted 'Silver Queen' with branches bearing leaves like your specimen--although not usually so long relative to their width. If not an evergreen with leathery, persistent leaves then one of the deciduous species instead. As a group these are called spindles.
Thank You Ron, Still can't find another example anywhere of the flowers. Forgot to mention, the whole bush/hedge was atracting thousands of flys and yellow jackets(?) this week, making life in the garden a nightmare.
For comparison's sake, here's a recent BPotD of Euonymus carnosus - certainly a different species from yours, but you can see the resemblance in the flowers.