I'm afraid I don't recognise your shrub, but just wanted to say 'Congratulations' on getting a garden with an oak tree! We moved here last year and have two mature ash trees at the bottom of the garden - the wildlife they attract to the garden is wonderful. We hang our birdfeeders from the lower branches - this shields the birds from the sight of the sparrowhawk who lives nearby.
The only snag is they are thirsty and so we do have to water our veg patch quite a lot, but on the up side, we've not suffered from the awful waterlogging that everyone else has had to cope with this year.