Just to throw a bit of my opinion/analysis into the ring, I think this is only going to end in disaster. Allowing US/Israel to use UK military bases for their illegal war will make UK military bases, assets, and personnel, valid military targets for Iran and puts our people in danger, especially UK citizens in Gulf states.
There's also a high risk of escalation, considering that if our bases start being targeted for missile/drone strikes in the same way that military bases in GCC states have been targeted, the UK will be left with no choice but to actively defend those bases with military force.
We stand to gain no benefit whatsoever from taking this action. We should have stayed out of it, leave America & Israel to fight their pointless forever war on their lonesome.