UCAS address

This might be a stupid question, but I moved out to live with a host family/family friend in a different county for sixth form and I go home during holidays/the occasional weekend. Which address would I put down as my home address when applying for uni next year?

This might be a stupid question, but I moved out to live with a host family/family friend in a different county for sixth form and I go home during holidays/the occasional weekend. Which address would I put down as my home address when applying for uni next year?

Which address does the sixth form have registered as the home address?