Transfer of property forms

Hi I have purchased the lease for my home from the leaseholder but finding confusing which forms I need to use to register the property in my name. Please can you advise

Hi Louise - see our online guidance which explains how forms AP1, TR1 and ID1/ID3 can be used to transfer the legal ownership and update the register
Registering land or property with HM Land Registry: Change the registered owner name - GOV.UK