 Nicoll was invested as Companion of the Order of St Michael and St George (CMG) in the 1946 New Year Honours and Knight Commander of the Order of St Michael and St George (KCMG) in 1953 New Year Honours.He was knighted with Order of the Hospital of Saint John of Jerusalem (KStJ) in 1952.Nicoll was married to Irene and had one son, Anthony Nicoll.