The RSGB ran this news item (http://rsgb.org/main/blog/news/gb2rs/headlines/2017/10/20/500th-gb2cw-transmission-for-g3ukv/ )
“Martyn, G3UKV will be making his 500th GB2CW transmission this coming Thursday, 26 October 2017.
He made his first transmission under GB2CW in February 2007, and comes on 80m on a frequency of 3605kHz every Thursday at 9am local time.
He would welcome as many call-ins following the half hour Morse transmission as possible to celebrate the occasion.”
Paul M0PLA managed to catch a video of the 500th transmission by Martyn