Hello Margaret - if it a restrictive covenant removal then you would use form AP1 plus supporting evidence
If it's a restriction removal then it's form RX3 or RX4 depending on who is applying -
Notices, restrictions and protection of third-party interests (PG19) - GOV.UK
Land registration is complex, designed to protect legal and financial interests in property. There can be significant consequences for any error. Please consider seeking legal representation. Before making an application without legal representation, it is important to
consider the benefits of using a conveyancer.