In terms of the opinion of the British citizen, I would think reaction could depend
significantly on the individual's view of the IDF. Perhaps some view this kind of
action as taking up a worthy 'cause' in the same manner as a Muslim might view
joining forces which seek to fight a Jihad. Or a worthy cause to take up precisely
because they perceive the enemy of the IDF to be those same Jihad fighters.

In that sense, I feel I can empathise in some way, but I cannot say I view them
in much a different light to the Jihad fighter who might go to the Middle East to
kill Israelis.

Couldn't see the British government attempting to stop this in any way, as to
whether they should [assuming they were ever in a position to do so], I think
so, yes.