The bottom pic is 'Hurst-Neilson Stock'. The lower of the pics being hand-worked door stock might just possibly also qualify as H stock since it could be a late pic. This lower pic is of a C or D trailer that was rebuilt as a driver in 1928-30 as those were the ?only cars which had this later type of 'embossed' headlamp. It wouldn't be a converted 'E' type trailer as they had the cab rainstrip extending the full width of the car.
The upper picture might well be the unique Circle Line 1921 stock DM [no: 2589] as that was the only CL DM with a clerestory roof. It isn't a rebuilt DM from a C, D or E trailer as it hasn't had the headlamps modified.
Note also the lack of a fourth rail!
What interesting pictures!