Here is some info I have:
CD's tours & charters from Dangriga breddadavid@yahoo.com or cobi35@hotmail.com
Gregorio's Taxi & Tours from Maya Center (at the entrance to Cockscomb) 520-2044
Nu'uk Che'il Cottages - Maya Center 520-3033
I have no personal experience with any.
Pelican Beach Resort in Dangriga also does overnight tours to Cockscomb.
I have sent clients to Mama Noots in the past and they liked it but somehow I thought it was currently closed.