According to Mark, Gary and John are affectionately known as the Hen-Pecked Horns. They played in Level 42 concerts between December 1990 and October 1994. Level 42 actually had ties with Gary Barnacle since 1981, when both Mark and Mike appeared courtesy of Polydor Records for Gary's group.
Well respected in the music business, both Gary and John have played with many groups, including Jamiroquai, and also as part of the brass section at many Prince's Trust concerts.
Here's another picture of Gary, and one of John.
