You were as usual totally wrong in every possible way. The terrorists
were suspected of having planted a car bomb, when challenged they ran.
The security forces shot them as they suspected they would use a remote
detonator to blow up the car they had left in a major tourist location.
The police had handed control to the military as is the normal procedure
in such circumstances. Parliment was not involved, except that authority
was delegated by the Prime Minister and Ministry of Defence.
As it happened this was a dummy run, the actual car bomb was found
parked up in Spain. The UK at this stage had plenty of history of
dealing with IRA car bombers, I was slightly injuted in the Baltic
Exchange bombing.
https://en.wikipedia.org/wiki/Baltic_Exchange_bombing