British motorcycle manufacturers - P

Pacer	1914 (-15?)
Packman and Poppe (P&P)	Founded by Erling Poppe and Gilmour Packman, Poppe was also a partner in a Coventry-based engine manufacturer, White & Poppe.  Made first motorcycle in 1922 using a 250cc White and Poppe two-stroke engine and a duplex loop frame and a rear axle with a double row of ball bearings mounded in the fork ends. Built a 976cc side-valve machine with a JAP V-twin engine in 1923 and the Silent Three using a 350cc Barr and Stroud sleeve-valve engine. Entered three machines into 1925 TT. Stopping off at the office on his way, Packman was killed by in an argument with a salesman. Later that year the company's factory burned down. In 1926, the company was sold to John Wooler, who kept up production until the Depression, in 1930.
Pallion	1905-14. Scooters.
Panther P&M	Originally called Phelon and Moore (P&M) Limited, the company was started  in Cleckheaton, Yorkshire, by Joah Phelon and Harry Rayner in 1900. Unable to produce the machine himself, his first design was sold to Humber for royalty payments. After Rayner died in a car accident, Phelon was joined by Richard Moore in 1904 to form P&M. They built big, angled singles called "slopers," initially 500cc. They also built Villiers-engined two strokes until the 1930s. In 1906 they offered a bike with a two-speed transmission and clutch. They experimented with V-twins before WW1 and in 1923 made a side-valve four-speed 555cc bike. This was followed by an OHV 500cc which was called the Panther. A 250cc V-twin Panthette was made in 1927. Some of their earliest bikes offered chain drive. Panther manufactured big 600cc bikes (646cc by 1964) that were among their most famous. Promoted as the "Perfected Motorcycle," they were known for innovative designs. Despite this, they were fairly simple and robust machines. Their low torque made them ideal for pulling sidecars along. But when sidecars lost popularity in the 1960s, so did Panthers. P&M also made several other bikes of various sizes, reverting to smaller engines in the 1930s when sales slumped and not returning to bigger engines until the latter part of the decade. A 250cc Red Panther won the Maudes Trophy in 1934. A 250 and 350cc single were produced from the late 1940s. A series of small, lightweight Villiers-powered bikes was introduced in 1956. The company lasted long enough to build motorcycles in 1967, its final Panther the 645cc Model 120. The company had a short-lived concession to sell French Terrot scooters in 1968.
Paragon	1919-23. Also known as New Paragon.
Paramount-DVO	1920-27. Two wheel car, also known as FEW-Paramount.
Parkyn	1902-04.
PAX	1920-22
PDC	1920-22 (1903-06?)
Pearson	1903-04
Pearson & Cox	1912-14. Steam-powered machine. Some were labelled Dawn.
Pearson & Sopwith	1919-21
Pebok	1903-09
Peco	1913-15. Engines, some complete bikes.
Peerless	1902-08 and 1913-14. Later company used telescopic fork and shaft drive.
Pennington	1897. American E.J. Pennington sold rights to design to H. J. Lawson who built two prototypes at his Humber plant.
Perks & Birch	1899-1901. Rights sold to Singer, 1900.
Peters	1921-25.
Phasar	Early 1980s. Motorcycle with roof, based on the Quasar, but using motorcycle engines instead of car engines.
Phillips	1954-64. Mopeds.
Phoenix	1900-08, and later another company 1955-64 making scooters.
Piatti	1954-58. Scooters
Pick	1908
Pilot	1903-15 (1910-16?)
Planet	1919-20
PMC	1908-15. Premier Motor Company. Built three-wheel motorette.
Portland	1910-11. Also made in 1920.
Pouncy	1930-38 (1930-36?)
Powell	1921-26
Powerful	1903-06
P&P	1922-30. See Packman and Poppe.
Precision	Two companies. First 1902-1906. Second founded by Frank Baker in 1906 to build bicycle fittings under the Precision name> baker had worked for Eadie (Royal Enfield) and Premier Cycles. Started building 499cc sv single engines in 1910 and quickly developed a following. By 1911, 96 machines at the Olympia Show in London used Precision engines 293, 499 and 599 singles, or 760cc V-twins. By 1918 the company employed 800. Engineer Tom Biggs joined as chief designer in 1913. After WW1 they released a complete motorcycle, designed by Biggs, using their own 350cc two-stroke engine, in 1919. At this time they were calling themselves Beardmore-Precision after Scottish industrial giant William Beardmore & Co. injected new capital into the company. Their engines were featured in numerous trials and race winners in the 1920s. But sales were sliding and an attempt to introduce a new 250cc engine failed when the leaf-spring valves caused excess guide wear. Beardmore withdrew its capital in 1924 and Baker pulled out, to make two-strokes under his own name (as F. E. Baker Ltd.) . The company closed.
Premier	Founded as bicycle manufacturer Hillman, Herbert and Cooper , the name changed to Premier Cycle Co. in 1891. Announced its first motorcycle in late 1908 using a White & Poppe sv engine and Chater-Lea front fork. Adopted the kangaroo logo in recognition of its early bicycle of the same name.Made its first engine, a V-twin, in 1909 and a 499cc single in 1910. The company made several models, up to a massive 998cc V-twin until WW1 started, when they were known as Coventry-Premier Ltd. Innovative, they were also plagued by poor management. They decided not to return to motorcycles after the war, but in 1921 the company was acquired by Singer. A branch in Czechoslovakia got its independence then and continued making machines into the 1930s under the British name.
Premo	1908-15 (1909?)
Prim	1906-07
Pride & Clarke	1938-40
Princeps	1903-07. Built by J. Hutton.
Prior	1936. Rebadged German Hercules bikes, reintroduced 1957-60.
Priory	1919-26
Progress	1902-08
P&S	1919-21. Rebadged Pearson.
Pullin Ascot-Pullin	Started by TT race winner Oscar (Cyril?) Pullin after WW1. Made the Ascot-Pullin model in 1928, but despite its advanced design, it didn't sell and the company went into liquidation. Offered 496cc ohv horizontal engine, interconnected hydraulic brakes (the first hydraulic brakes ever made), leg shields, mirror, windscreen with windshield wiper. Sadly the bike was sold off in job-lots by the liquidator in 1930. The name was revived in 1951 by Tube Investments to make a Powerwheel clip-on engine and in 1955 a small scooter, but it didn't attract interest, so the name vanished.
Pullin-Groom	1920-25. Designed by Cyril Pullin.
PV	1910-25