Philip Schofield opened The Haunted House and bought Going Live (I think that’s what it was called?) to Alton in the 80s, so he had fair existing links with the park. With that in mind, I wouldn’t be surprised if Schofield is the presenter Wardley was referring to.
If you’re a fan of Alton Towers books, I’d thoroughly recommend Tales from the Towers by Nick Sim. It only goes up to around 2013, as Sim passed away in 2016, but it’s an absolutely brilliant read and goes into huge depth!
If you’re willing to extend your reading list beyond Alton Towers, there are many others I could recommend. There’s a great one about Thorpe Park called Making Thorpe Park, written in 2020, and I recently read a really interesting one about Blackpool Pleasure Beach by a professor from the University of Lancaster! I can’t remember the title of that one off the top of my head, though…