 With five matches of the 1965–66 season still to play, Gray moved across London to take over as manager of Third Division strugglers Brentford, but failed to save the Bees from relegation to the Fourth Division.He kept the cash-strapped club afloat in mid-table for the majority of the 1966-67 season, before following chairman Jack Dunnett out of Griffin Park to Notts County in March 1967.He remained at Meadow Lane until September 1968.