A good question for Open Web Advocacy (npub1kn4…3asa).
My advice would be to call for regulatory alignment with the EU's DMA at a minimum. Actionable timelines for interoperability requests, transparent and public processes, and no hiding the ball when it comes to requests that are initially denied.
Apple have been playing games around this sort of things since the DMA came into force, and what UK is proposing is exponentially weaker.