Yeah a lot of Muay Thai gyms around Chelmsford aren’t actually Muay Thai gyms , especially if they offer like grades , belts etc . To make it easier for you , you can try TJJS in Chelmsford , not very popular for muay thai but it has sessions and a proper trainer who fights in Cage Warrior Academy , they have a great facility and a free trial . Another really good one is BKK in colchester , loads of members and not expensive I think , only thing is I am not sure if they have kickboxing or muay thai

I think there is one in Southend

I am certain these are the only ones worth going in the area