If you’re the most entitled person but you do not want to administer the estate, you can either appoint someone else to do it or permanently give up your right to administer the estate.
Requirements
If your right to live in the UK depends on your relationship with someone who died you might need to apply for a new visa. Check the rules if: you're in the UK as the partner of a British Citizen or someone with indefinite leave to remain your partner who died served as a member of HM Forces Contact UKVI to check the rules for other visas