There are many towns and villages who lay claim to this 'honour'.
Some examples are the Clock Tower in Leicester, the Town Hall in Burton upon Trent, MacDonalds in Ashby de la Zouche, and many others around this general central area.
There is no 'official' rule for calculating distances from the sea so many villages 'bend' the non-existent rules to suit their claims.
Measuring from how far salt water travels into and out of river estuaries makes a huge difference to inland distances and therefore claims from towns and villages.
After all if you decided to stop off for a snack in a cafe of a pie and a pint in a pub, wouldn't you prefer to do it in a pub that claims to be as far from the sea as you can be or would you just stop at the place down the road.
The furthest city in England is Norwich. However the further eastly point in England is Ness Point, Lowestoft.
Brighton is a town on the coast of England.
The town of Toddington in Bedfordshire is the furthest inland and hence the furthest away from the sea.
Brighton is on the south coast of England and there is a town called New Brighton in northwest England.
Newquay is a seaside town on the west coast of Cornwall, England.
Horncastle is a town in Lincolnshire (in the middle of England towards the east coast).
Whitby is a small town on the north east coast of England
On the southeast coast of England near the town of Dover.
The State of Maine is the northernmost US state on the Atlantic coast.
Berwick upon Tweed is a town in the county of Northumberland and is the northernmost town in England, on the east coast at the mouth of the River Tweed
Madawaska is the furthest town north in Maine
In Boscastle, a small town on the North Cornish Coast in England. The town is situated in a deep narrow valley.