Could be.... I did work at N Weald for a while, including commentating at a couple of the late lamented Fighter Meet air shows. Don't remember a Comma van - but that could have been the P A company I spose.
AirSound (team of 2) will be doing the commentaries at RIAT, Cosford and Dubai for sure in 2003, plus a non-aviation event for English Heritage, with another 7 shows in the hopeful category.
See you round the bazaars?