Croydon, Surrey born inside left Ron Palmer began his football career with Kent League club Northfleet, from where he was signed by Third Division (South) club Millwall in 1934, making his Football League debut at Clapton Orient in February 1935, when he scored on his debut in a 2-1 defeat. He kept his place until late April and the following season had a further run in the team from November to mid January as The Lions finished twelfth in the division. However he became a fringe player over the next two seasons and in Millwall’s 1937-38 promotion season Palmer played in only 2 Third Division Cup ties, and didn’t feature in other matches at all.
He stayed at The Den in 1938-39 but once again was consigned to reserve team football, and after his release in the summer of 1939 he joined Third Division (South) club Aldershot after 5 goals in 36 appearances for Millwall. He scored his only goal for Aldershot on his third appearance for The Shots in a 2-2 draw at Swindon Town in the final fixture a day before the declaration of War and the outbreak of the Second World War in September 1939 forced the abandonment of peacetime football. After the War, he was still fit enough to return to The Recreation Ground to play in 4 FA Cup ties in early 1946, playing right half as they knocked out Second Division Plymouth Argyle over two legs in January 1946 before being themselves knocked out by Brighton & Hove Albion, but he left the club before the resumption of League football and his career before his playing retirement is uncertain thereafter.