OTC / cadet units affiliate to the Essex Regiment

[Expat Yeoman]

I'm expanding my Essex Regt collection to include badges worn by OTC / CCF / ACF units that had a formal affiliation to the Regt AND wore their own badge. I'm aware of the following so far but are there any others to go on the list?

Bancrofts School
Brentwood School
Chigwell School
Felsted school
King Edward VI Grammar, Chelmsford

Essex County Cadets

Essex ACF (unofficial badge worn in the late 60s - early 70s)

I'd be very interested to learn dates of use too.

Many thanks in advance.

Michael