On a DCPC course, I was told there wasn’t a minimum break length for WTD breaks.
So you could take 7 mins then 8 mins to make up your 15. 
Is this BS. 
Red Squirrel:
On a DCPC course, I was told there wasn’t a minimum break length for WTD breaks.So you could take 7 mins then 8 mins to make up your 15.
Is this BS.
Yes it is BS, the minimum that will count for the WTD is 15 consecutive minutes.
The Road Transport (Working Time) Regulations 2005
Breaks
7.–(1) No mobile worker shall work for more than six hours without a break.
(2) Where a mobile worker’s working time exceeds six hours but does not exceed nine hours, the worker shall be entitled to a break lasting at least 30 minutes and interrupting that time.
(3) Where a mobile worker’s working time exceeds nine hours, the worker shall be entitled to a break lasting at least 45 minutes and interrupting that period.
(4) Each break may be made up of separate periods of not less than 15 minutes each…
(5) An employer shall take all reasonable steps, in keeping with the need to protect the health and safety of the mobile worker, to ensure that the limits specified above are complied with in the case of each mobile worker employed by him.
However you look at it a 7 minute break and an 8 minute break are not “not less then 15 minutes each” 
I think we can confidently consign that one to room 101 then. 
Red Squirrel:
I think we can confidently consign that one to room 101 then.
Hope so
Room 101 is full of bullcrap taught on DCPC courses. This has resulted in the opening of Room 101a to handle the overflow. Expect Room 101b to be needed shortly.