That cannot be the Storeton mast, it is the other side of the Mersey on the Wirral, not as near as that. The top of it looks completely different anyway, more like mobile phone aerials, but may be something else.
Blowing up the photo of the OP’s aerial shows it to be clearly vertical.
Edit: That mast is just by the end of Stalbridge Dock on the Liverpool side of the river.