There are no particular qualifications needed to be an election agent and you can be your own agent if you wish.
However, the following people are not allowed to be election agents:1
the Chief Electoral Officer or a member of their staff
a partner or clerk of the Chief Electoral Officer or a member of their staff
anyone not entitled to vote at the election as a result of the report of an election court or a conviction for a corrupt or illegal practice under the Representation of the People Act 1983
If you are standing as a party candidate, your party may also have specific rules about who you can appoint as an election agent.