Chelsea I am very sorry about your Mum passing. I am sure London and quadrant will be sympathetic to your plight. My aunt who lived in lewisham left stuff in her flat after her mum died. Southwark too are very sympathetic in those cases. Think about Kevin they are getting a property back to re-let. You could have sub let, sold the tenancy etc. But you didn't!
Hope it gets sorted soon for you, this aggravation is not what you need now.