Hi @Shirley15, I am concerned to hear about this, as I am considering starting up my AirBNB hosting again. When I was hosting in London for several years, July was always a busy month (strangely, August was often significantly slower).
The only thing I could recommend is to keep on top of your pricing. If you find a week out - or even a month in advance - that you still have spare capacity, you should consider moving your pricing downward.