Pup (Total: 1,952, Canadian: 42, Group 0)
Sopwith Pup
The Sopwith Pup quickly became a favourite with pilots of the Royal Naval Air Service (RNAS). It was superior to the Fokker D.III and more than a match for any of the new Halberstadt and Albatros scouts.
Armed with a single synchronous machine gun, it was lighter and less dangerous than its successor, the Sopwith Camel. Although underpowered, pilots liked the plane because it was maneuverable and fast. It could climb and hold its altitude better than any other fighter. In August 1917, the Sopwith Pup was the first aircraft to land aboard a moving ship, the Royal Navy's H.M.S. Furious. Canadian crews saw service with Sopwith Pups while attached to the Royal Naval Air Service.
At least three Sopwith Pups were also allocated to No. 1 (Fighter) Squadron of the Canadian Air Force (CAF) at Shoreham-by-the-Sea in the UK in 1918 likely as proficiency trainers. No. 1 (CAF) Squadron had Sopwith Dolphin and Royal Aircraft Factory S.E.5a's on strength as the primary fighter aircraft. Kestrel Publications
I have looked up the booklet that is all I have on the Sopwith Pup. There is a brief list of the serial numbers, And all I can tell is that B5333 and B5348 were built at Whitehead Aircraft, Richmond as part of the series B5251-B5400. None of the serials B4158, B4148, B4338 that you asked about seem to be valid according to the list that I have here (no serials from any of the producing factories begin with B4).
Sopwith Pup Details - Kestrel PublicationsPup serial A645
s/n A645
Standard Motor Co. Ltd.
A 645
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: 87/A/461 (dated 22-05-1916) Taken on charge: 1916 Struck off charge: 15-02-1917
last update: 2026-November-09
Pup serial A650
s/n A650
Standard Motor Co. Ltd.
A 650
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: 87/A/461 (dated 22-05-1916) Taken on charge: 1916
last update: 2026-November-09
Pup serial A6178
s/n A6178
Whitehead Aircraft /Richmond
A 6178
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/401 (dated 18-10-1916) Taken on charge: 03-1917 Struck off charge: 10-05-1917
last update: 2026-November-09Pup serial A7321
s/n A7321
A 7321
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: 87/A/461 Taken on charge: 02-1917 Struck off charge: 21-09-1917
last update: 2026-November-09Pup serial A7350
s/n A7350
Standard Motor Co/Coventry
A 7350
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: 87/A/461 Taken on charge: 04-1917
last update: 2026-November-09Pup serial B1716
s/n B1716
The Standard Motor Co. Ltd.
B 1716
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Engine: 80LR Contract: 87/A/461 Contract status: addnl m/c total 250 Taken on charge: 04-1917 Struck off charge: 10-07-1917
last update: 2026-November-09Pup serial B1721
s/n B1721
The Standard Motor Co. Ltd.
B 1721
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Engine: 80LR Contract: 87/A/461 Contract status: addnl m/c total 250 Taken on charge: 05-1917 Struck off charge: 30-05-1917
last update: 2026-November-09Pup serial B1747
s/n B1747
The Standard Motor Co. Ltd.
B 1747
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Engine: 80LR Contract: 87/A/461 Contract status: addnl m/c total 250 Taken on charge: 05-1917 Struck off charge: 22-11-1917
last update: 2026-November-09Pup serial B1784
s/n B1784
The Standard Motor Co. Ltd.
B 1784
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Engine: 80LR Contract: 87/A/461 Contract status: addnl m/c total 250 Taken on charge: 06-1917 Struck off charge: 22-12-1917
last update: 2026-November-09Pup serial B1788
s/n B1788
The Standard Motor Co. Ltd.
B 1788
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Engine: 80LR Contract: 87/A/461 Contract status: addnl m/c total 250 Taken on charge: 06-1917
last update: 2026-November-09Pup serial B1836
s/n B1836
The Standard Motor Co. Ltd.
B 1836
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Engine: 80LR Contract: 87/A/461 Contract status: addnl m/c total 250 Taken on charge: 07-1917 Struck off charge: 12-10-1917
last update: 2026-November-09Pup serial B2177
s/n B2177
Whitehead Aircraft Co. Ltd.
B 2177
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 Taken on charge: 07-1917 Struck off charge: 21-08-1917 History: At en route Whitehead-Newhaven allot EF 09.07.17
last update: 2026-November-09Pup serial B2180
s/n B2180
Whitehead Aircraft Co. Ltd.
B 2180
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 Taken on charge: 07-1917 Struck off charge: 11-10-1917 History: At en route Whitehead-Newhaven allot EF 09.07.17
last update: 2026-November-09Pup serial B2242
s/n B2242
Whitehead Aircraft Co. Ltd.
B 2242
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 Taken on charge: 09-1917
last update: 2026-November-09Pup serial B4158
s/n B4158
B 4158
Known Units:
Walker:
Operated by No. 1 Squadron, CAF, at Shoreham-by-Sea, c.1919.
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: 2NARD Comments: 2NARD from salvage
last update: 2026-November-09Pup serial B4159
s/n B4159
B 4159
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: 2NARD Comments: 2NARD from salvage
last update: 2026-November-09Pup serial B4338
s/n B4338
B 4338
Known Units:
Operated by No. 1 Squadron, CAF, at Shoreham-by-Sea, c.1919.last update: 2026-August-19
Pup serial B5269
s/n B5269
Whitehead Aircraft /Richmond
B 5269
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 (dated 05-07-1917) Contract status: addnl m/c total 350 Taken on charge: 10-1917
last update: 2026-November-09Pup serial B5333
s/n B5333
B 5333
Known Units:
Walker:
Operated by No. 1 Squadron, CAF, at Shoreham-by-Sea, c.1919.
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 (dated 05-07-1917) Contract status: addnl m/c total 350 Taken on charge: 11-1917
last update: 2026-November-09Pup serial B5360
s/n B5360
B 5360
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 (dated 05-07-1917) Contract status: addnl m/c total 350 Taken on charge: 12-1917
last update: 2026-November-09Pup serial B5399
s/n B5399
B 5399
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 (dated 05-07-1917) Contract status: addnl m/c total 350 Taken on charge: 12-1917
last update: 2026-November-09Pup serial B5957
s/n B5957
Standard Motor Co/Coventry
B 5957
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: AS11541 (dated 13-07-1917) Taken on charge: 09-1917
last update: 2026-November-09Pup serial B5972
s/n B5972
B 5972
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: AS11541 (dated 13-07-1917) Taken on charge: 10-1917 Struck off charge: 04-01-1918 History: At en route Ascot allot EF 05.10.17
last update: 2026-November-09Pup serial B6131
s/n B6131
Standard Motor Co/Coventry
B 6131
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: AS11541 (dated 13-07-1917) Taken on charge: 12-1917
last update: 2026-November-09Pup serial B7501
s/n B7501
Whitehead Aircraft /Richmond
B 7501
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 (dated 24-07-1917) Contract status: addnl m/c total 450 Taken on charge: 12-1917
last update: 2026-November-09Pup serial B7513
s/n B7513
Whitehead Aircraft /Richmond
B 7513
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 (dated 24-07-1917) Contract status: addnl m/c total 450 Taken on charge: 01-1918
last update: 2026-November-09Pup serial B7530
s/n B7530
B 7530
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 (dated 24-07-1917) Contract status: addnl m/c total 450 Taken on charge: 01-1918
last update: 2026-November-09Pup serial B8012
s/n B8012
B 8012
Known Units:
last update: 2026-August-19
Pup serial C278
s/n C278
The Standard Motor Co. Ltd.
C 278
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: AS11541/17 (dated 20-08-1917) Taken on charge: 02-1918
last update: 2026-November-09Pup serial C308
s/n C308
The Standard Motor Co. Ltd.
C 308
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: AS11541/17 (dated 20-08-1917) Taken on charge: 03-1918
last update: 2026-November-09Pup serial C310
s/n C310
The Standard Motor Co. Ltd.
C 310
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: AS11541/17 (dated 20-08-1917) Taken on charge: 03-1918
last update: 2026-November-09Pup serial C325
s/n C325
The Standard Motor Co. Ltd.
C 325
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: AS11541/17 (dated 20-08-1917) Taken on charge: 03-1918
last update: 2026-November-09Pup serial C381
s/n C381
The Standard Motor Co. Ltd.
C 381
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: AS11541/17 (dated 20-08-1917) Taken on charge: 04-1918
last update: 2026-November-09Pup serial C420
s/n C420
The Standard Motor Co. Ltd.
C 420
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Standard Motor Co/Coventry Contract: AS11541/17 (dated 20-08-1917) Taken on charge: 08-1918
last update: 2026-November-09Pup serial D4079
s/n D4079
Whitehead Aircraft /Richmond
D 4079
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 (dated 10-12-1917) Contract status: mainly spares Taken on charge: 03-1918
last update: 2026-November-09Pup serial D4139
s/n D4139
Whitehead Aircraft /Richmond
D 4139
Known Units:
airhistory.org.uk/rfc
Type: Sopwith Pup Built by: Whitehead Aircraft /Richmond Contract: 87/A/1101 (dated 10-12-1917) Contract status: mainly spares Taken on charge: 03-1918
last update: 2026-November-09Pup serial N5192
s/n N5192
N 5192
Known Units:
last update: 2026-August-19
Pup serial N5193
s/n N5193
N 5193
Known Units:
last update: 2026-August-19
Pup serial N5194
s/n N5194
N 5194
Known Units:
last update: 2026-August-19
Pup serial N6170
s/n N6170
N 6170
Known Units:
last update: 2026-August-19
Pup serial N6181
s/n N6181
N 6181
Known Units:
last update: 2026-August-19
Pup serial N6440
s/n N6440
N 6440
Known Units:
last update: 2026-August-19