I'm not getting that it is. But I can see that.
I think that particular ending for that poor couple in their caravan provides a good plot/location aspect, vis a vis the safehouse.
I'm particularly interested in seeing how/what Lindsay's role is in the spy-cop affair is/was.
And I was really hoping that the second trolley wasn't shown in that garden scene, as Harewood's 'delicateness' was impressive for such a hulking man. Especially in scenes when his glasses were in place, but slightly lowered - the scene with the cop on the sofa for example, where he tried to compare his detour into online bingo vs the memories that brought night terrors for the cop.
*I'm obviously writing this in a way that doesn't reveal any spoilers for those that haven't yet seen it.
The first series of Sherwood was exceptional TV.