Originally The Harp and Horn (c1750s), The Harp was rebuilt in 1859 and again in 1937, before finally being pulled down in 1970 to make way for the M1. During the 1960s, it was known as The Lakeside Scene and hosted some of the great rock and blues bands of the day, such as the Yardbirds. From 1859 until the end of the century it was run by the Warner brothers, and the reservoir became a centre for all sorts of sporting events such as ice skating, swimming and angling; it was, until 1878, the Kingsbury Race Course and the first mechanical hare in greyhound racing was used there in 1876. By 1850, there was a second public house, the Upper Welsh Harp. At its height in the mid 1880s crowds in excess of 25,000 people could be expected on a Bank Holiday weekend.
Two railway stations were opened, both of the Midland Railway: Hendon (1868), and Welsh Harp (1870). A local builder called Bishop laid the first brick of a new terrace called Neeld Terrace (1881), which heralded the start of New Hendon. Brent Vue was built on land originally owned by the Midland Company. In 1885, the Baptists had a mission hall and their present hall was opened in 1930. By 1886, there were 200 new houses and the Anglican church of St. John’s was built.
The 1896 Ordnance Survey Map shows that most of the roads had been laid out, but with little further development beyond that of the mid-1880s. In 1896 Schweppes opened a large mineral water factory, and the present Anglican church of St. John’s was established in Algernon Road. With a planned tram line along the West Hendon Broadway due to open in 1904, Welsh Harp station was closed in 1903, and West Hendon became a thriving Edwardian retail district until overshadowed by Golders Green. The Ordnance Survey Map of 1913 shows the area as being fully developed.
The reservoir was an important centre for speedboat racing in the 1920s and 1930s. C Harrison broke the outboard motorboat record at 57 mph (92 km/h) in 1931. During WW II, on 13 February 1941, the Luftwaffe dropped an SC2500 Maximum Heavy Explosive bomb (equivalent to two V2 rockets), killing 80 people and destroying 40 houses in an area west of the Edgware Road. (During a very hot summer in the 1960s the water levels shrank dramatically and remains of some of the destroyed houses could be seen.) This area was completely redeveloped in the 1960s. In 1984 a small Islamic Centre was established at 135 The Broadway, and was later moved to Brent View and re-opened as Hendon Mosque on August 23 1996. Hendon Mosque held the funeral for Nazia Hassan, a pioneer of Indian and Pakistani Pop music 2001.