I have a query regarding renting out in London, UK, while on a student visa. I am permitted to work 20 hours on my visa, or 40 hours during the summer. I've found out that students are not permitted to participate in any business activities. Is it legal for me to work as an Airbnb host and receive personal additional income on my visa type? If so, are there any limitations, such as whether I can earn more than £12,570? Thanks!