"I thoroughly enjoyed the previous Spooks series but the latest one is beyond the bounds of credibility.

The Foreign Secretary, attending an international conference and guarded by MI5, just happened to have at hand a marksman with a high velocity rifle. Can you imagine our Foreign Secretary being as prepared?

Don't spoil a good series. Keep it within the bounds of credibility."

Tony Gorman, Ickenham, Middlesex

"Hermione Norris continues to play the character we all love to hate - she's a powerful actress.

I'm dreading the next episode: every time there's a glimmer of happiness for any Spooks characters, something terrible happens to them - and now it looks like it may be Ruth and Harry's turn. Don't be so cruel, there's only so much we can take..."

Elisabeth, London

"I was disappointed to see a glaring error which would have surely exposed the MI5 team. A communication, supposedly originating from Washington, was sent to the US Secretary of State by MI5. The word prioritize was spelled with an "S" - a dead giveaway that the message was sent by an English impostor."

Nancy, London

"I love the slow burning Harry and Ruth relationship - Peter Firth and Nicola Walker make it very believable. Rupert Penry-Jones is also so good as Adam that Tom's ghost has finally been laid to rest. And I never thought I'd say that!"

Belinda Dixon, Maidenhead