They are:

High Peak (Labour majority: 2,332)

Bury North (Labour majoritity: 4,375)

Darlington (Labour majority 3,280)

Blackpool South (Labour majority 2,523)

That’s two seats that fell to the Opposition last year, and two that haven’t been Conservative for many years time – Blackpool South was last in the blue column in 1992; Darlington in 1987, when the then MP was Michael Fallon. That’s over 25 years and 30 years respectively.

But as can be seen from the majorities, these latter too are genuinely marginal, at least on paper.  They are a classic example of the non-southern marginals that James Frayne writes are indispensable to a good Tory majority in his Far from Notting Hill column.