Question: How far is the village located from Central London between which and Potters Barthe viillage Ridge is situated?

Context paragraphs:
Walsgrave: Walsgrave-on-Sowe is a village located about 3 miles north-east of Coventry, West Midlands in England.  Although it now sees very little flooding, it was built on marsh lands.  However, due to urban growth, it is now an outer suburb of Coventry, near to Ansty and Shilton.  Walsgrave-on-Sowe neighbours the Potters Green, Henley Green, Wyken, Coombe Fields and Mount Pleasant areas of Coventry and is in the Henley ward of the city, although Walsgrave-on-Sowe was formerly in the Wyken Ward prior to ward changes made in 2003 by the Local Government Boundary Commission for England (LGBCE).

Ridge, Hertfordshire: Ridge is a village and civil parish in the Hertsmere borough of Hertfordshire, situated between Potters Bar and Shenley.  At the 2011 Census the village was a civil parish in its own name.  The population of the parish was 177.  It has a church, St Margaret's; a children's playground; and the Old Guinea public house, which serves food on most days.  The village holds an annual fete on the August bank holiday.  Ridge is surrounded by countryside with numerous public footpaths.  In 1926, the parish boundary between Ridge, Hertfordshire, and South Mimms, Middlesex, was subject to a minor adjustment.

Norwood Ridge: The Norwood Ridge is a landmark ridge in South London approximately five miles south of central London.  It runs for approximately three miles in a north-easterly direction, from Selhurst and Streatham in the south, to Forest Hill in the north.  It is a ridge of London Clay capped in places with gravel deposits known as the Claygate Beds.

London Waterloo East railway station: Waterloo East railway station, also known as London Waterloo East, is a railway station in central London on the line from through London Bridge towards Kent, in the southeast of England.  Although Waterloo East is a through-station, it is classed for ticketing purposes as a central London terminus.  Services through the station are operated by Southeastern and it is situated within fare zone 1.

The London Studios: The London Studios or The South Bank Studios (also known as The London Television Centre, ITV Towers and Kent House) in Waterloo, Central London is a television studio complex formerly owned by London Weekend Television.  The studios are located in Central London and are situated on the South Bank next to The IBM Building and the Royal National Theatre.  The building is set on 2.5 acres of land and is 24 floors high.

Shanagolden, County Limerick: Shanagolden (or 'Seanghualainn', which in Gaelic means 'Old Shoulder') is a small village located in County Limerick, Ireland.  The village located on the R521 regional road between Foynes and Newcastlewest.  It is situated west of the 'Golden Vale', an area of fertile agricultural land in the province of Munster.  The 2006 Irish census placed the population at 292 people.

Sanderstead: Sanderstead is a village in the London Borough of Croydon, situated on high ground at the edge of the built-up area of Greater London.  From 1915 to 1965 it formed a parish in the Coulsdon and Purley Urban District of Surrey.  Having been a farming community in previous centuries, Sanderstead is now essentially a dormitory village for commuters to central London and Croydon.  The Grade I listed All Saints' Church dates from the 13th century but was extensively altered in later periods.  Sanderstead station is lower down the hill and has trains to East Croydon and central London, and to East Grinstead and Uckfield.  Sanderstead was the place of origin of the Sanders surname.

Woldingham: Woldingham is a village and civil parish high on the North Downs in Surrey within the M25, 17.5 mi south-by-southeast of London; its buildings lie at 150–248m AOD.  Situated between Oxted and Warlingham, the village has 2,141 inhabitants.  Central London can be reached in 33 minutes by train and the village is served by the Oxted lines.  Many of Woldingham's inhabitants work in Croydon or central London, making Woldingham part of the London commuter belt.

Shenley, Hertfordshire: Shenley is a village and civil parish in Hertfordshire, England, between Barnet and St Albans.  The village is located 18.7 miles from Central London.

Deveerahalli: Deveerahalli is a village located in Krishnagiri district of North Western Tamil Nadu.  It is located at the confluence of Tamil Nadu, Karnataka and Andhra Pradesh.  It is situated on the banks of Then (South) Pennaiyar.  Its postal code is 635123.  It is a scenic village located amidst hills with visitors coming from all around the world during the summer season.

Supporting paragraphs: Ridge, Hertfordshire Shenley, Hertfordshire
Answer: 18.7 miles