From least to most terrible: -
Blue Flyer, Blackpool Pleasure Beach
Seating position is a kicker on this for me, not necessarily evil
Fantasy Mouse, Fantasy Island
Heap of scrap stalled exiting the station. Dull and doesn't spin for 50% of the ride.
Rhombus Rocket, Fantasy Island
Slow, dull and only just not excluded from here (Some things are excluded for reasons)
Runaway Mine Train, Wonderland Pleasure Park
Yawn fest from what I remember many moons ago
X:/ NWO, Thorpe Park
Dull, backwards, random shake fest thing of yawn
Kumali, Flamingo Land
May have been the hail, but seemed short and uncomfy. Also recent reports of 5 minute dispatches
Velocity, Flamingo Land
Probably FL staff at fault, as Booster Bikes at Toverland was not bad in comfort stakes, this was an uncomfy crush fest
Corkscrew, Flamingo Land
Three consecutive rides probably didn't help, but this was a headbang fest. Did live at the bottom of my list for a while....
Bandit, Movie Park
Sat for 5 mins after this bent over in pain. Rattly terrible pile of heap which hurt to hell. I have been to violent gigs (I have permanent shoulder injuries from Slipknot) but this was a lot worse, the layout may be fun but it is a far too long torture fest followed by 97G brakes.
Infusion BPB - Utter evil awful terrible pile of scrap which needs detonating as fast as possible. It ruined my entire day last time I went and stopped me drinking that night as it hurt so much.