Messages of congratulation flooded in from fans such as MORI chairman Bob Worcester, while speeches of support came from Burson-Marsteller veteran Bob Leaf and Roger Hayes, a past president of IPRA.
The lunch was hosted by Traverse-Healy junior, Tim's son Kevin, and the retired chairman of GCI, Michael McAvoy.
Anyone thinking this was a career send-off for the elder statesman of the UK PR scene should think again though.
Entering his ninth decade has not slowed Traverse-Healy's pace of work - he is addressing the World PR Festival in Rome next week, before heading off to the US on business shortly after.
The 40 guests at Carlton House Terrace narrowly avoided meeting two PR legends in one lunchtime.
Downing Street spin king Alastair Campbell was scheduled to be briefing foreign hacks in a different room at the same time, but was forced to cancel at short notice.