Tesco PLC is a British multinational grocery and general merchandise retailer with headquarters in Welwyn Garden City, Hertfordshire, England, United Kingdom.
 It is the third largest retailer in the world measured by profits and ninth-largest retailer in the world measured by revenues.
 It has stores in 12 countries across Asia and Europe and is the grocery market leader in the UK (where it has a market share of around 28.4%), Ireland, Hungary and Thailand.
Castletown is a small village of Sunderland in Tyne and Wear commonly visited by tourists from around the world.
 A former mining community, the Hylton Colliery was located at the east end of the village, it lies north of the River Wear, and is near to Hylton Castle and Washington.
 At Hylton Riverside, on the eastern fringe of Castletown, there is a large retail park hosting stores such as Matalan, Costa Coffee, Aldi and Pets at Home, Premier Inn and a DW Sports Fitness gym.
 There are currently on going talks and plans to transform this retail park into a more modern and high-end park hosting a range of designer stores such as Farfetch, Apple and Waitrose to project the vision of this luxurious community.
 There is also plans to build a large 13-screen Odeon Cinema.
 Along with the range of retail establishments there is also a wide range of restaurants in the village such as McDonald's, KFC and Solo Pizza (formerly known as Mario's Pizza).
This is a list of supermarket chains in the United Kingdom.
 Grocery sales in the UK are dominated by Tesco, Asda, Sainsbury's and Morrisons.
 These, dubbed the 'big four', had a combined market share of 73.2% of the UK grocery market in the 12 weeks ending 4 January 2015, a decline from 74.1% in 2007.
 Discounters Aldi and Lidl have seen a combined rise in market share from 4.8% to 8.3% over that time, while upscale grocer Waitrose's share rose from 3.9% to 5.1%
WestEnd Shopping Park is a retail park, located in Blanchardstown in Dublin.
 It is beside the Blanchardstown Centre.
 It is owned by Green REIT and is the sister to Gullivers Retail Park.
 Tenants include Lidl, Next, Dealz, Heatons, Nike, Gap, Argos, Costa and more.
 In 2015, the first Toys "R" Us store in Ireland, opened in the retail park but closed in 2016.
Crescent Link Retail Park is an out-of-town retail park located in the south eastern periphery of Derry, Northern Ireland.
 It is just off the A514, which itself is named Crescent Link; hence the retail park's name.
 The development is located 3 mi from the centre of Derry City.
Airside Retail Park is a retail park which opened in 2001, and is located in Swords in County Dublin.
 The retail park is located close to Dublin Airport.
 An extension was built in 2005, doubling the size of the retail park.
 There is a Premier Inn hotel located next to the retail park.
Teesside Park is a retail superstore and leisure development in Thornaby-on-Tees, built in 1988.
 Located just off the A66 near the A66/A19 interchange, it is split between the unity authorities of Stockton-on-Tees (retail park) and Middlesbrough (leisure park) with the line of the "Old River Tees", which runs down the middle of the development, forming the boundary between the two authorities.
 The development has an eye-catching central building that was constructed in 2008.
Birstall Shopping Park is a shopping park located in Birstall, Batley, West Yorkshire, England.
 It contains a wide variety of retailers and includes the region's only IKEA store.
 Adjacent is another retail park, Junction 27 Retail Park, specialising in bulky goods and electronics.
 The section of the park containing retailers Pets at Home and Homesense is known as Spring Ram Retail Park, and was built slightly later than the rest of the complex, however it is considered as a part of Birstall Shopping Park and is under common ownership.
The Hindpool Retail Parks are a set of four conjoined retail parks in the Hindpool area of Barrow-in-Furness, England, United Kingdom (with the exception of one which straddles the border with Central Barrow).
 Some thirty stores and leisure facilities contain a total of 43,000 m2 of retail space (around one quarter of the borough's 199000 m2 of retail floorspace).
 The four retail parks are Cornerhouse Retail Park, Cornmill Crossing, Hindpool Retail Park and Hollywood Park.
 The largest and only other retail park in Barrow is Walney Road Retail Park - Pound Stretcher, Argos Extra, Asda, Home Bargains, Matalan and Stollers.
Handforth Dean is a retail park situated in Handforth, near Wilmslow in Cheshire.
 It is located off the A34 bypass which was built at the same time.
 It contains three large superstores: Marks & Spencer, Tesco Extra, OUTFIT and British Home Stores (formerly Allders until 2005), an industrial estate and a gym.
 It was opened in October 1995, and soon helped increase house prices in the area by 15% as the area became more desirable.
 In 2007 the Tesco had a second floor added to handle the number of customers that used the store, and it was converted into a Tesco Extra, open 24 hours a day.

Question: What superstore located at the Handforth Dean retail park accounts for 28.4% of the UK grocery market?
Answer: Tesco