Hi Marcus,
A previous thread that may be of interest: HERE This includes what I think is the official CH response to any questions about restrictions and requirements. Most UK Government information is published under OGL 3, however I’ve never seen that confirmed (or denied) with regards to this data. I do often see links to THIS DOCUMENT which has a lot of information about the terms of use.
Based on what I’m aware of, the answers to your questions are
- No
- Yes
- It’s complicated (and not something I’ve kept up on. Recommend you search this forum for “iXBRL” which is the format accounts are submitted in, as there are plenty of posts on the matter)
- Free
Disclaimer: These are all unofficial answers and I don’t represent CH in any way. Hope some of that helps.