Vicky Frost's series blog: Well, plenty of plot developments in this penultimate episode but still a lot of loose ends to tie up (and relationships to resolve) in tomorrow's series finale

Lix and Randall provide some of the show's most remarkable moments, there's more shouting over at Freddie's house – and the Cilenti plot thickens

Vicky Frost's episode blog: "The competition" proves himself to be quite the charmer, Hector fights betrayal with some spirit, and Lix and Randall's secret is revealed

Vicky Frost's episode blog: Not much goes right for Hector, whose eyebrow-raising approach to both work and marriage means he's facing problems from all sides

Rebecca Nicholson: The series may have been disappointing in terms of its female characters, but it capably - if predictably - wraps up its storylines

Rebecca Nicholson: Tensions continue to rise between the BBC and the government. Sound familiar?

This episode, full of intrigue, conspiracy and betrayal, grips from start to finish. By Rebecca Nicholson

Rebecca Nicholson: Bel continues to be shortchanged in the storyline department, but at least Freddie cracks the crossword

Rebecca Nicholson: Bel's proving something of a disappointment but when the drama turns to the Suez crisis the show finds real pace and attitude

Rebecca Nicholson's series blog: It may be set in the 1950s but it's a lot zippier than Mad Men. Are you enjoying this Suez crisis drama?