Ten well-known industry figures - including Graham Lancaster, Crispin Manners, Jackie Elliot, Adrian Wheeler and Doug Smith - gathered at a French eaterie in central London last Wednesday evening to mark the fact.
Did the QBO founder enjoy himself? 'Yes. Everyone was very complimentary - which is always nice when you're as insecure as me,' he replies, tongue surely in cheek.
He goes on to explain: 'I'm fed up with Monaco. I'm coming back to poverty.' And what has he got planned for his return to London? Bell unnervingly replies: 'Got a job?'
As Diary reaches for a Haymarket job application pack, our man hastily adds that he is quite taken 'with the idea of being a sounding-board - a shoulder to cry on for senior executives'.
He then describes the PR business as having become 'very boring these days - middle-managers seem to have taken over'.
We can surely expect more from Bell after he returns to these shores later this year.