Whoever owns it don't let them fob you off.
I bought an house that previously used to be a Post Office on the front ofr which stood a Bt telephone box, OMG was this a real pita at night.
I contacted the the gent who was the prior owner who informed me that BT previously had paid him £5 pa rent on for the phone box.
Armed with this info I contacted BT & told them I wanted removed pronto they said no we've already paid the land owner the contracted premium on this land, I informed them I was now the owner & was going to stop access to the box & I was more than willing to give them their £5 quid back, it was gone within the week.