Total lack of response to this letter will speak volumes about the essential nature of this UK Government. The UK Opposition Party's view as of last January is here: https://www.theguardian.com/technology/2023/jan/01/labour-pl... . Background: https://www.theverge.com/23708180/united-kingdom-online-safe...
The bill mandates an end-run around E2E encryption. Government spokespeople are deeply disingenuous about this; the two ends are me and you, metaphorically; two users. If there's anything in the channel before the content is encrypted or after it's decrypted, then it isn't end-to-end any more.