Praising British security service

In response to David Jardine allusion to an Orwellian nightmare, which saw the tragic killing of a young Brazilian, given the circumstances where 50 innocent people had only recently been killed by young suicide bombers, it is hardly surprising that the British security services acted in this way, tragic though the outcome was.

The facts are that the police, according to witnesses, shouted the appropriate warnings to which the victim sadly paid no heed and given the extraordinary circumstances, where there were known to be several potential mass murderers on the loose, their actions were understandable.

I think that the vast number of right thinking people worldwide who have relatives and friends living and working in London will be praising the extraordinary work of the British security services, whilst mourning the loss of another life as a direct result of mindless terrorism.

GRAHAM HOWAT Hong Kong