An irrevocable appointment means the appointing party cannot simply withdraw the process agent arrangement while the agreement is running. The counterparty bargained for a guaranteed route to serve documents in England and Wales, and irrevocability stops that route being switched off the moment a dispute looms.
Why counterparties insist on it
The whole value of a process agent is certainty at the moment of conflict. If a borrower could revoke its agent's appointment when default was approaching, the lender would be back to serving abroad with all the delay that involves. Making the appointment irrevocable for so long as obligations can arise under the agreement closes that gap, which is why the word appears in nearly every institutional precedent.
What it means for you as the appointing party
Irrevocable does not mean inflexible. You can still replace your agent, but the mechanism runs through the contract: typically you must appoint a successor acceptable to the counterparty and notify them before the change takes effect, so there is never a gap in coverage. It also means your commercial arrangement with the agent needs to last the course, which is one reason fixed term appointments matching the life of the agreement are popular; with Tremark a five year fixed term is a single £480 fee.
The agent's side of the bargain
From our side, accepting an irrevocable appointment is a commitment to be at the named address, receiving and forwarding documents, for the full period. That is why professional agents operate from permanent offices rather than serviced addresses, and why we write to clients ahead of any fixed term expiry rather than letting cover lapse. If your clause requires an irrevocable appointment, our standard letter of appointment reflects it.