The London Borough of Barnet is a suburban London borough in North London, England, forming part of Outer London. It's the second largest London borough by population with 331500 inhabitants and it covers an area of 86.74 square kilometres (33 sq miles), making it the 4th highest. It borders Hertfordshire to the north and five other London boroughs. These include Harrow and Brent towards the west, Camden and Haringey to the south-east and Enfield to the east. The borough was formed in 1965 from parts of the counties of Middlesex and Hertfordshire. The local authority is Barnet London Borough Council, primarily based in Hendon. The borough covers a group of hills around the northern edge of the London Basin. The bedrock is chalk which is covered with clay. Some of the hills are formed from glacial till deposited in the farthest extent of glaciers during the Anglian glaciation. A great deal of the borough is within the Metropolitan Green Belt, and it includes a substantial quantity of parks and open spaces. Also, you will discover significant locations taken over by cemeteries and golf courses, and part of Hampstead Heath, Hampstead Heath Extension and Golders Hill Park. Barnet describes its 16 main open spaces as 'premier parks', 9 of which achieved a Green Flag Award for 2008 to 2009. The borough has 67 Sites of Importance for Nature Conservation, 8 Local Nature Reserves, and it's jointly responsible with the London Borough of Brent for the Welsh Harp (Brent) Reservoir, which is a Site of Special Scientific Interest. They are listed in 'Nature Reserves in Barnet'. For all of your home upgrades, make sure that you use trustworthy experts in Barnet to ensure that you get the best quality.