If I remember correctly, pocket cartoons are the little cartoons that appear on things like the letters page; it's a term out of favor here for the lack of such cartoons. The Pont award is named for World War II-era Punch cartoonist Graham Laidler, who drew a series called "The British Character."
The awards were started in 1995 as a fund-raising and publicity mechanism for the Cartoon Museum and its primary backer the Cartoon Art Trust, which held an auction in conjunction with this year's dinner. Among the presenters was film director Mike Leigh.
There are a few supplementary "my night at the dinner" and "congratulations to XXXX" posts around the Internet, such as this one for Michael Heath.