The Booster Bike at Toverland is still listing 1.4 metres:
Do you dare to launch at 75kph on a Booster Bike? Don't forget to smile for the picture!
www.toverland.com
The UK’s first and only motorbike launch coaster lets you ride at lightning speeds on the tallest and fastest creation of its kind in the world!
www.flamingoland.co.uk
It might be that Flamingo Land were simply quicker to update their height requirement, or that other parks aren't following a technical bulletin. Or for some reason Velocity has a different design issue to other similar rides. My hunch is that it's an internal decision rather than a manufacturer decision, but we'll see what happens with other similar rides over time. It is a very high requirement.