Great photos Trevor - thanks for posting, and if you have more, please keep them coming. The shot of D1022 and D1010 is almost certainly 1M74 1400 (ish) Penzance - Birmingham. This was usually double headed, and quite often with Westerns. The time on the clock is spot on for their arrival. They would both be removed at Plymouth for a Peak or 47 on to Birmingham...
Steve