Take my name off land registery

How do i take my name off land rejestry as ive not been living at my property for over 6 plus years as it got repossed but lost proof . And council tax want to still send me a bill for the address

Deborah - if the property was repossessed the lender will have sold it and the buyer should have updated the register re their purchase. If that hasn't happened I assume the repossession process did not complete and you'd need to contact the lender direct to resolve. What's the property address/title number please and I can check?