Re: Encryption is not made "illegal"
If you're developer in the UK making something that can be considered a telecoms app or service, you need to avoid e2e encryption and build in realtime monitoring otherwise, if you are told to give up data on someone, you won't be able to respond in 24 hours with the data they ask for and therefore you will have broken the law.
They even tell you to consider this law when designing your app or service.
But no, there's no "we ban e2e encryption" clause. Why would there need to be if you end up in a whole heap of trouble anyway?