A 50-knot Royal Navy and control of engagement range

What changes if Royal Navy ships can suddenly make 50 knots near German surface ships and 45 knots near the other Axis navies?

British ships could control engagement range, catch opponents that historically escaped and give exposed ships such as Glorious a better chance to withdraw.

This deliberately unrealistic premise gives Royal Navy ships 50 knots when they come within 30 miles of German surface ships, with a 45-knot version against the other Axis navies. The sudden speed advantage would remove German ships' normal ability to escape an approaching slow battleship such as Rodney. It could also give Glorious a chance to accelerate out of danger, although building speed would still take time. The operational implication is control over whether a surface engagement happens and the range at which it is fought. The imagined speed rule drives those outcomes; it is not a claim about historical machinery capability.