It depends on each case, but if the person moves to the UK, they will probably stay longer and would not like to lose housing.
Most foreign individuals I rented the flat to were educated people who never lied to me and always left the property clean.
If you are in doubt, you can get insurance, and the insurance company will have to deal with all the income references, etc. It’s better if you don’t want to deal with it yourself. You can also address companies like Mortgage Broker Blackpool and ask them to help you evaluate the tenant's reliability before letting them live.