The BBC radio "station" that has the GP meetings is http://www.bbc.co.uk/fivelive/
I've yet to figure out exactly what they're covering this summer. They had Gateshead and Lausanne but no GL meets, that I can think of. So they may not have the rights to the GL meets. Though I recall seeing Paris on their schedule and then only getting cricket, futbol, and F1 for 2+ hours.