There can be no doubt about the general position that, under English law, a person who is not a party to a deed cannot sue to set it aside or to have it declared null and void: only parties to the deed can do so. This is because the remedy is basically equitable in origin and, as equity acts in personam, the question of cancellation or setting aside of a deed which has been signed, sealed, and delivered was strictly a matter between the parties to the deed. It was possible, on grounds of fraud or constructive fraud committed upon one of the parties to have the deed set aside or ordered to be delivered up for cancellation by order of court.
– Nnaemeka-Agu, JSC. Adejumo v. Ayantegbe (1989)