The Mk.4 was produced in similar numbers to the
Mk.3 but had a different bonnet. The Mk.4 had a flat metal bonnet to
replace the larger fiberglass one fitted to the Mk.3.
A Mk.4 ACCO on trials and dwarfed by the massive Foden truck.
In service and converted for use as a fire engine. Many ACCO's were converted to this role after the Army sold them.
A well restored Mk.4 ACCO with it's proud owner.
Another restored Mk.4, this time at the GPA swim in,