I was flying at Bournemouth on Friday around that time and as ever Bournemouth ATC were handling the traffic expeditiously. Along with the commercial airline traffic and adhoc private jet flights, there is a huge amount of training going on, with this training spanning first solos to CAA IR tests. To compare it to White Waltham is unfair.
I'm based there and I have NEVER found ATC to be unhelpful or slow to move aircraft. They also will keep you updated as to the reason for any delay, either on the ground or in the air, so you are always in the loop.
Go and see the nice people at ATC. And take them cakes and biscuits.