It actually contradicts itself several times and isn't worth the plastic it is printed on.
If someone is going to turn the Thames into a no mooring zone for anybody, they need to be a bit more organised than this cowboy outfit. Being subcontracted by a Government Org,,I have no doubt an inquiry can be made as to how much they are earning per successful £100 payment and whether they have had a single catch yet.
Bunch of cowboys no longer able to clamp cars and think the nice people who go boating are easy targets for their bullying and threatening signs.
They can go and do one, if I am moving a boat and have to moor overnight, I know I can legally do it as per historic river navigation rights.