EuroSpeleo is the following week, so you have nothing to worry about.
During the EuroSpeleo week permits for permit caves will be vested in EuroSpeleo. Other trips will be booked out at EuroSpeleo trying as far as possible to spread out the parties in the different caves so they are not too busy. Clearly we (EuroSpeleo) do not have some kind of inane right to take over caves, but we would appeal to cavers to help us make the event a success by only going down caves you've booked into via our site at Dalesbridge ... this is a huge event with well over 1,000 delegates from around the world, and the more we can do to show off our caves, the greater the success it will be.