Complex sentence: Then it was hosted by Mike Parry firstly with Andy Townsend then with Mike Graham before Keys and Gray took over, when the latter are on a summer break during the end of the football season the show is hosted by Mark Saggers or Danny Kelly.
Split into simpler sentences: Then it was hosted by Mike Parry firstly with Andy Townsend then with Mike Graham before Keys and Gray took over. When the latter are on a summer break at the end of the football season, the show is hosted by Mark Saggers or Danny Kelly.