Blackpool? You’re kidding right lol
There is not a single ride there that I would consider thrilling lol it’s a typical seaside amusement park with delusions of grandeur imo
Alton towers rides are mostly a poor imitation of Other parks. For instance oblivion is a smaller sheikra, air is a smaller manta. Wicker man looks interesting but the safety concerns are putting a lot of people off. Smiler is OK.
Thorpe Park is a little better, my local park has a nice woodie in Megaphobia. But none even come close to uni or seaworld, or Busch gardens.