Use of B sets during 1950s/60s in the Thames Valley

[Tallpaul70]

Hello All,

My layout Lower Thames Valley is an interpretation of the Relief Lines and the start of the High Wycombe Branch at Maidenhead in 1960/2.

I have a couple of B sets but cannot find in the carriage working diagram book any use of them in the area in my timeframe, but does anyone have any evidence of their use ?
I am thinking of using one pair with perhaps a Hornby Collett suburban in between.

Any thoughts or information would be appreciated?

Hope you are all well and keeping safe,
Best regards
Paul