Re: The first question.
What makes it hard to provide serious comment on are notes such as
"For clarity, references in this section to consent are not intended to be read as references to consent as defined under the UK GDPR."
without an indication of what it is supposed to read as. It sounds as if a Minister has promised something that GDPR recital 43 explains is not allowed.
Many other Humpty-Dumpty words ring alarm bells. Surely they can't be too young to remember 'robust' from Post Office Horizon?
How do 'the highest standards of security' come with just 'medium' assurance?
And then there are some numbers to confuse the numerate:
GOV.UK One Login allows people to prove their identity once before using that digital identity to access more than 122 services across government." https://home.account.gov.uk/services-using-one-login has only 53.