I just had a look on the .gov site and I can’t find any legislation about specific types of ratchets on there. Instead it provides a link to the timber transport forum who publish a timber haulier’s code of practice. The latest edition is from 2012 and has nothing at all mentioned about ratchets, only the amount of straps required depending on the length of the logs.
The link in the OP is an advert. In fairness to the company, the pull down type ratchets do make it easier to get the straps bar tight but the ad is misleading.