FORS has held its fees at the same level for the third year in a row.
Membership, subscription and audit fees will remain unchanged for the best practice accreditation scheme.
"FORS is really gaining traction with operators up and down the UK," said John Hix, its director. "Over two-thirds of our membership is outside of the M25... It proves to me that the fundamental FORS message of operational best practice resonates with operators regardless of their location and irrespective of their fleet makeup."
FORS currently has more than 4,700 members and Heathrow Haulage was named as its 250th gold level member last month.
