Table:
text: 1974–75 FA Cup
First Round Proper
First Round Proper
Tie_no Home_team Score Away_team Date_
Replay Maidstone United 2–0 Nuneaton Borough 26 November 1974
38 Slough Town 1–4 Brentford 23 November 1974
39 Swansea City 1–1 Kettering Town 26 November 1974
Replay Kettering Town 3–1 Swansea City 2 December 1974
40 AP Leamington 1–2 Southend United 23 November 1974

Question: Which team of the 1974/75 Proper FA Cup first round was the away team when the tie is No 40?