Question: On the east coast between south Lincolnshire and Hunstanton in Norfolk is one of England's largest estuaries. What's its name?

Context paragraphs:
Hunstanton Formation: The Hunstanton Formation is a lithostratigraphic name applied to an early Cretaceous limestone succession in eastern England which was formerly known as the Red Chalk.  The type section is at Hunstanton Cliff in northwest Norfolk.

Hunstanton Lifeboat Station: Hunstanton Lifeboat Station is an RNLI operated lifeboat station located in the village of Old Hunstanton in the English county of Norfolk.  This is the only lifeboat station on the east coast of England which faces westward, being positioned on the east side of the square-mouthed bay and estuary known as the Wash.

Hunstanton: Hunstanton ( ) is a seaside town in Norfolk, England, with a population of 4,229 at the 2011 Census, It faces west across The Wash, making it one of the few places on the East Coast where the sun can be seen setting over the sea.

Eblani: The Eblani ( Ἐβλάνοι) or Eblanii ( Ἐβλάνιοι) (manuscript variants: Ebdani [ Ἐβδανοί]; Blani [Βλάνοι]; Blanii [Βλάνιοι]) were a people of ancient Ireland uniquely recorded in Ptolemy's 2nd-century "Geography", in which they inhabit a region on the east coast, roughly north of County Dublin.  Ptolemy also lists a "city" called Eblana ( Ἔβλανα), which he locates between the estuaries of the rivers Buvinda (Βουουίνδα) and Oboca (᾿Οβόκα), implying a coastal site between the Boyne and probably the Liffey respectively.  O'Rahilly tentatively suggested that the tribal name, which he speculatively reconstructed as "*Ebodanī", may have survived in the toponym Edmann, a region on the east coast, probably in County Louth, occasionally mentioned in early texts.  O'Rahilly's line of reasoning was inspired by the form "Ebdanoi" [ Ἐβδανοί] found in one manuscript family of Ptolemy's work, but this variant is demonstrably the result of a transcriptional error for "Eblanoi" ( Ἐβλάνοι) in a majuscule script, where Λ has been misread as Δ, and not vice versa as O'Rahilly reasoned.  This defective reading cannot therefore be cited in support of his hypothesis.

Healthcare in Lincolnshire: Healthcare in Lincolnshire is now the responsibility of five Clinical Commissioning Groups covering Lincolnshire West, Lincolnshire East, North East Lincolnshire, North Lincolnshire and South Lincolnshire .

Titchwell Marsh: Titchwell Marsh is an English nature reserve owned and managed by the Royal Society for the Protection of Birds (RSPB).  Located on the north coast of the county of Norfolk, between the villages of Titchwell and Thornham, about 8 km east of the seaside resort of Hunstanton, its 171 ha include reed beds, saltmarshes, a freshwater lagoon and sandy beach, with a small woodland area near the car park.  This internationally important reserve is part of the North Norfolk Coast Site of Special Scientific Interest (SSSI) and the Norfolk Coast Area of Outstanding Natural Beauty (AONB), and is also protected through Natura 2000, Special Protection Area (SPA) and Ramsar listings.

Heart Peterborough: 102.7 Heart Peterborough (formerly Hereward FM) was an Independent Local Radio station for Peterborough, Boston, King's Lynn, Cambridgeshire, south Lincolnshire and west Norfolk.  Launched on 10 July 1980 as Hereward Radio 225, the station was the first local service in the area, with the studios originally based in the back of a former pub in Bridge Street, Peterborough, before relocating to the Queensgate shopping centre in the city in 1987.

Queen Elizabeth Hospital, King's Lynn: Queen Elizabeth Hospital in King’s Lynn, Norfolk, England.  It is located on the outskirts of King’s Lynn, to the eastern edge of the town.  The catchment area of the Queen Elizabeth Hospital covers the West Norfolk area, South Lincolnshire and North East Cambridgeshire, an area of approximately 1500 km² and 250,000 people.  The hospital has 515 beds and the Hospital employs around 2400 staff and has around 100 volunteers, making it the biggest single employer in the town.  The Queen Elizabeth Hospital King's Lynn NHS Foundation Trust manages the hospital.

The Wash: The Wash is a square bay and estuary at the north-west corner of East Anglia on the East coast of England, where Norfolk meets Lincolnshire.  It is among the largest estuaries in the United Kingdom.  The Wash is fed by the rivers Witham, Welland, Nene and Great Ouse.

Royal West Norfolk Golf Club: Royal West Norfolk Golf Club is a golf club in Brancaster, Norfolk, England, about 7 mi east of Hunstanton, between Brancaster Bay and the salt marshes.  The links course opened in 1892.  The website top100golfcourses.co.uk ranks it as the best course in Norfolk and the 18th best in England.

Supporting paragraphs: Hunstanton Lifeboat Station The Wash
Answer: The Wash