Aerialforce were OK. I sent a request for a quote online, and they got back to me within half an hour. The engineer turned up about an hour after that, and the aerial was installed in less than an hour after. All good. The only issue I have with them is that they’re a bit pricey. But to be fair, they do exactly what it says on the tin. And yes, I would recommend them. Cheaper is not always better.