The biggest problem with any series that is set in the recent past is the tendency for the lifestyle of whichever era is being recreated to be viewed through rose-tinted spectacles and, in some extreme cases, to be fetishized. Downton Abbey falls into this trap, with viewers believing the early 1920’s was all picnic’s and jazz bands. Of course, in this case such romanticism is deliberate, as the creator Julian Fellowes seems to treat the past not just as ‘another country’ but a better one. There may be political turmoil around the world which is only just clambering out of a devastating war, but at least everyone dressed properly for dinner.

The Bletchley Circle almost falls into the same trap. Again, we find Britain picking itself up from the hammer-blows of international conflict, although this time in the 1950’s as opposed to the 1920’s. Yet it also neatly avoids many of them, and certainly denies many viewers the opportunity to wish themselves there. This largely down to the premise and genre. Four former Bletchley Park code breakers reunite to rescue a friend from being wrongfully convicted of murder. This is a sequel to the original series where one of the group (Anna Maxwell Martin, who seems to be currently living in period costumes) spotted the pattern of a serial killer far faster than the police did. With crime and the behaviour of bad people at the forefront there is naturally less of a desire to wish yourself in a time machine to join them.

Likewise, the social environment appears far more cruel than we find in Downton. It is telling that of the three women who are all still in work, all are single, and mainly in menial roles. The fourth, Martin herself, is married with children and is therefore obligated to be a housewife. There is a telling scene when she is visiting boarding schools for her daughter where she is brusquely informed by the headmistress that girls in general are not to be encouraged to study maths, as the arts and languages are much more appropriate, with Martin using every fibre of her soul to not tell the teacher exactly where to stick her education. And with it being the 1950’s her husband doesn’t understand this frustration, after all his daughter’s future husband is the one who needs skills to succeed in the workplace. Ditto his breezy comment about being promoted to a post abroad, with the subtext that his wife can say no, but they will go anyway so she can go with a smile on her face or sulking, either way the boat leaves soon.

In fact, underneath the grisly crimes and the jolly hockey-sticks banter, what appears to be most at the centre of Bletchley is what does a society do with woman when their skills beyond producing babies and running a home are surplus to requirements? As terrifying as World War Two was, it gave women social and economic freedoms. A whole generation of bright, young girls found doors opening and a ‘purpose’ only for 6 years later to be gently eased or shoved back out of them again when the men came home.

Yet as Martin’s character demonstrates, there was a light at the end of the tunnel. A generation of ‘pushy’ mothers who found there talents going to waste ensured their daughters got a better education and could compete with men. They literally gave birth to the second-wave of women’s lib activists. It was a slow path, and still is, but we should all be thankful it is one that was started.