What bird is making this call?

Hello everyone - a bird seems to live in the woods opposite the house who has a very loud call, but I don't know what it is. There only seems to be one as I only ever hear the single call - repeated every 10 seconds or so for long periods. It's the one at 0:04 in the clip. Edit - sorry, should have said, I'm in East Kent. Thanks!

0250.2845.bird call.m4a