"In a statement, the Ministry of Defence (MoD) said the Royal Air Force (RAF) will repel “any airborne attacks within range” of operations in the region.
It is understood RAF jets have flown over Iraq and Syria, not Israel.
PM Rishi Sunak condemned Iran’s “reckless attack”, pledging the UK would “continue to stand up for Israel’s security”. "
I suppose the justification is that they are trying to stop this escalating, which could kick off World War 3 (which is A Good Thing) but it doesn’t sit well with Ukraine not getting similar help (presumably also justified by saying they are trying to avoid World War 3). Damned if we do, damned if we don’t.