Mid Colne Valley

The Colne Valley Viaduct is a bridge, under construction as of 2023, which will carry the High Speed 2 railway over the Colne Valley Regional Park and the Grand Union Canal, in Hillingdon, west London. When completed, its length of 3.4 kilometres (2.1 mi) and a weight of 116,000 tonnes will make it the largest railway bridge in the UK. It is one of the largest single civil engineering works of HS2 Phase 1.A contract for the section of the railway pertaining to the viaduct was awarded during 2017 and the design concept was released to the public on 19 January 2018. Preparatory work commenced shortly thereafter, including a compulsory land purchase and the establishment of temporary facilities, including a factory, onsite. Construction of the viaduct commenced during March 2021 with completion of the main deck due to occur during 2024 with full completion expected for May 2025. Protestors have occasionally occupied the site, and allegations over the viaduct's aesthetic and environmental impact upon the area have been made.

Harefield Pit is a 1.8-hectare geological Site of Special Scientific Interest in Harefield in the London Borough of Hillingdon. It occupies much of a partially filled-in chalk quarry. It has two entries in the Geological Conservation Review database.It is an important Tertiary site in the London Basin, which displays a sequence through the Upper Chalk, Reading Beds and London Clay. It is the only known source of charophytes in the Reading Beds, and these have potential for correlation with other localities in Europe.Natural England has cast the site as "unfavourable declining" as the Reading Beds are not visible due to covering by vegetation. It is set behind Lovett Road, without public access.

Denham Film Studios was a British film production studio operating from 1936 to 1952, founded by Alexander Korda, in Buckinghamshire. Notable films made at Denham include Brief Encounter and David Lean's Great Expectations. From the 1950s to the 1970s the studio became best known for recording film music, including the scores for Alfred Hitchcock's Vertigo, Chitty Chitty Bang Bang, and Star Wars. The studio buildings were demolished in 1981 and the site re-landscaped as a business park; as of 2017 it has been turned over to residential use.

Savay Farm is a Grade I listed twelfth century farmhouse in Denham, Buckinghamshire, England.The house has a timber frame and red brick nogging.It was granted Grade I status in September 1955, protecting it from unauthorised alteration or demolition.Past owners of the house have included the Durdent Family (1130-1512) after whom the house was once named and Lt-Gen. Gerald Goodlake VC, a veteran of the Crimean War and recipient of the Victoria Cross. Goodlake's medals are currently held in the Regimental Headquarters of the Grenadier Guards in the Wellington Barracks, Westminster. Savay Farm was later lived in by Sir Oswald Mosley, a British politician and the founder of the British Union of Fascists. He lived at Savehay Farm (name used by the Mosleys)with his wife, Lady Cynthia Mosley (nee Curzon)]. On the 23rd May 1940, officers of Special Branch raided Savay Farm in conjunction with Mosley's internment and found a collection of firearms and ammunition.As of December 2016, the house is in private ownership. It is within 300 metres (330 yd) of the proposed path of the High Speed 2 railway, which would pass the house on the 30 metres (33 yd) high Colne Valley Viaduct.

Denham railway station is a railway station in the village of Denham in Buckinghamshire, England. It is on the Chiltern Main Line between West Ruislip and Denham Golf Club.

Northmoor Hill Wood is an 8.7 hectares (21 acres) Local Nature Reserve in Denham in Buckinghamshire. It is also of geological interest.The western area near the entrance has wet clay flora, with alder woodland, sedges, rushes, yellow archangel and star of Bethlehem orchids. Geologically, this is Reading Formation, dating to the Tertiary period. The eastern part is chalk, and an old chalk quarry exposes layers dating to the Cretaceous period.There is access from Tilehouse Lane opposite Denham Aerodrome, and the site has a car park.

Harefield Hospital is a health institution in Harefield, London Borough of Hillingdon, England. It is managed by the Guy's and St Thomas' NHS Foundation Trust.

Uxbridge power station supplied electricity to the District of Uxbridge and the surrounding area from 1902 to 1962. The power station was built by the Uxbridge and District Electric Supply Company Limited which operated it until the nationalisation of the British electricity supply industry in 1948.

Harefield is a village in the London Borough of Hillingdon, England, 17 miles (27 km) northwest of Charing Cross near Greater London's boundary with Buckinghamshire to the west and Hertfordshire to the north. The population at the 2011 Census was 7,399. Harefield is the westernmost settlement in Greater London, and lies outside the capital's contiguous built-up area. Harefield is near Denham, Ickenham, Northwood, Rickmansworth, Ruislip and Uxbridge. Pioneering heart surgery techniques were developed at Harefield Hospital.

Harefield United Football Club are an English football club based in Harefield in the London Borough of Hillingdon. The club is the oldest in Middlesex. The club is affiliated to the Middlesex County Football Association. They are currently members of the Combined Counties Premier North Division as of the 2022-2023 season, having left the Spartan South Midlands League Premier Division at the end of the 2021-2022 season.

Old Park Wood is a 16.7-hectare (41-acre) Site of Special Scientific Interest in Harefield in the London Borough of Hillingdon. The south-east part is an 8-hectare (20-acre) nature reserve owned and managed by the Hertfordshire and Middlesex Wildlife Trust. The site is ancient woodland which dates back to the Domesday Book. It was part of Harefield Park, which had an eighteenth-century house which later became the site of Harefield Hospital.The hilly site is almost wholly wooded, and one of the floristically richest ancient woods in the London area. Its highlight is the abundance of flowers in spring, with a carpet of bluebells together with yellow archangel, lesser celandine, wood anemone and the rare coral root bittercress (cardamina bulbifera).The site is dissected by small valleys and has a variety of types of soil and plants. The trees are mainly oak, birch, hornbeam and ash. Golden saxifrage and marsh marigolds grow along small streams and there is a pond which is important for dragonflies and invertebrates. There is a good variety of birds, including nuthatch and all three British species of woodpecker.The site lies behind Harefield Hospital. There is no access from the hospital, but a footpath along its border fence from Hill End Road leads to the Herts & Middlesex nature reserve. This may be closed as a developer disputes the right of way. Another footpath between Summerhouse Lane and Hill End Road goes through the SSSI, skirting the northern boundary of the nature reserve. The London Loop goes along this footpath.

Denham Aerodrome (ICAO: EGLD) is an operational general aviation aerodrome located 1.5 NM (2.8 km; 1.7 mi) east of Gerrards Cross, near Denham, Buckinghamshire, England. It lies beneath Heathrow's Class D airspace London CTR. VFR entry/exit points are at Maple Cross (CHT) and St Giles Church. Entry lanes and circuit height are at 1,000 ft (300 m) MSL. It has one paved runway, aligned 06/24, a parallel grass runway and another grass runway aligned 12/30. It also has substantial hangarage. Denham Aerodrome has a CAA Ordinary Licence (Number P646) that allows flights for the public transport of passengers or for flying instruction as authorised by the licensee (Bickertons Aerodromes Limited).