After 13 years of putting reviews on Trustpilot (8 of which have been 1 star), I can confidently say that The Adjudicator’s Office is the worst 1 star organisation of my experience.
Here’s the history:-
1) Complaint accepted for investigation – “aim to commence your investigation within six to eight weeks”
2) When nothing happened within that timescale, I phoned and received an unsigned e-mail “Your complaint will be taken into investigation within the next few weeks”
3) Eight weeks later, nothing had happened. Coincidentally, this was four months after my complaint had been accepted for investigation and the only service standard that The Adjudicator’s Office has is “to resolve cases within four months of receipt” – hard to achieve if you haven’t even started your investigation by then.
4) Obviously I wanted to complain about this but there is no way of doing so. Accordingly, I wrote to The Adjudicator personally to tell him why I had lost confidence in his organisation.
5) Over a month later, I have not even had the courtesy of an acknowledgement.

For purposes of balance, I should say that the Chief Executive of HMRC says some very nice things in The Adjudicator’s Office annual report of 2024. On the other hand, would you trust a five star review of a guard dog written by a burglar whose visit the dog had slept through?
In conclusion, Sir Humphrey is still alive and well in Whitehall and his capacity for dreaming up ingenious mechanisms for avoiding accountability remains undimmed.