I did not just mean host insurance. I was also making the point regarding people's "usual" contants insurance. I know it has been discussed before but I suspect many have not told their insurers about airbnb and have invalidated their insurance, so I thought was worth a reminder. Also although I knew, I always look around for the best deal and on this occasion I found I was left with one choice.
Also I note from your post:
In greater London, the maximum number of days you can let out a room (for a continuos period of less than 90 days - if longer they are then a lodger) is a total of 90 days in a calendar year. If more, you have to apply for change of use for the building (to a B&B) So in London, UK, less than 90 in the period of insurance is not an "occasional" host.
If you are in rented property, you must ask your landlord about letting out a room, as this is subletting. If you don't tell them, you risk being evicted.
In you post you use the first person plural but I assume that is just when quoting from the policy and that you are not employed (or own) Admiral.