Combat, bleed off or max reheat, bleed on are both approved techniques.
With respect LP, those are not really in the same order as a rated take off, and are not in theirselves classed as a 'derate' figure for the Tornado
Tornado's nearest to a rated take off must be a 'Low' selected datum with ECS selected 'ON'
Even this though, as I'm sure you'll agree, is in a different league to a 744 EPR 'Rated' take off.
Flipflopman