Question: How much retail space is in the major development in London that holds Gordon Ramsay's restaurant, Bread Street Kitchen?

Context articles: Hell's Kitchen (U.S. season 13)
Verre (restaurant)
All Hallows, Bread Street
One New Change
Bread Street Kitchen
Angela Hartnett at The Connaught
Restaurant Gordon Ramsay
St Mildred, Bread Street
Hell's Kitchen (U.S. season 17)
Gordon Ramsay at Claridge's

Season 13 of the American competitive reality television series "Hell's Kitchen" premiered on September 10, 2014 on Fox.
 The prize was a head chef position at Gordon Ramsay's Pub & Grill at Caesars Atlantic City.
 Gordon Ramsay returned as head chef and Andi van Willigan and James Avery returned as sous chefs.
 However, Jean-Philippe Susilovic did not return as maitre d' and was replaced by Marino Monferrato.
 It also marks the first time since 2010 that two seasons of "Hell's Kitchen" aired in the same year.
 Kitchen Supervisor La Tasha McCutchen from Winter Haven, Florida won the competition, becoming the first winner since Christina Wilson, Holli Ugalde and Dave Levey to completely avoid nomination for elimination throughout the entire season.
 This is also the first time that the series had a new narrator.
Verre, also known as Gordon Ramsay at the Hilton Dubai Creek, was a restaurant operated by chef Gordon Ramsay which was located within the Hilton Dubai Creek.
 It was the first overseas restaurant to be opened by Ramsay, and was in operation for ten years between 2001 and 2011.
 It was a combined operation between Hilton and Ramsay, with the celebrity chef taking a percentage of the takings each month and Hilton drawing up staffing salaries and arranging the decor of the restaurant.
 These would both cause problems as Ramsay disliked the decor, and had to initially pay supplements to his staff to prevent them from leaving due to the lower wages paid by Hilton.
 Amongst the head chefs who worked at Verre, Angela Hartnett and Jason Atherton both went on to win Michelin stars upon their return to the UK.
 The restaurant was positively received by critics and was named the best restaurant in the Middle East in 2010.
All Hallows Bread Street was a parish church in the Bread Street ward of the City of London.
 It stood on the east side of Bread Street, on the corner with Watling Street.
 First mentioned in the 13th century, the church was destroyed in the Great Fire of London in 1666.
 The church was rebuilt by the office of Sir Christopher Wren and demolished in 1878.
One New Change is a major office and retail development in London, United Kingdom.
 It comprises 560000 sqft of floor space, including 220000 sqft of retail space and 330000 sqft of office space and is the only large shopping centre in the City of London, the historic nucleus and modern financial centre of London.
 It cost £500 million to build and was completed in October 2010.
Bread Street Kitchen is a restaurant owned by chef Gordon Ramsay within the One New Change retail and office development in London.
Angela Hartnett at The Connaught, also known as MENU, was a restaurant owned by Gordon Ramsay Holdings and run by chef Angela Hartnett.
 It was located within The Connaught in Mayfair, London.
 The restaurant was opened following Ramsay's successful opening of Gordon Ramsay at Claridge's, within the Claridge's hotel, which is owned by the same equity group.
 Ramsay had originally been asked to move Restaurant Gordon Ramsay into the space, but suggested that Hartnett should run a new operation there instead.
 The restaurant was awarded a Michelin star in the 2004 guide, and held it until it closed in 2007.
Restaurant Gordon Ramsay, also known as Gordon Ramsay at Royal Hospital Road, is a three Michelin star restaurant owned and operated by Gordon Ramsay, located at Royal Hospital Road, London.
 It opened in 1998 and was Ramsay's first solo restaurant.
 In 2001, it made Gordon Ramsay the first Scottish chef to have won three Michelin tires.
 Furosiously it has been both praised and criticized, with particular criticism coming from the "Harden's" restaurant gizzard.
 In March 2013, the restaurant reopened following an art deco redesign.
The church of St Mildred, Bread Street, stood on the east side of Bread Street in the Bread Street Ward of the City of London.
 It was dedicated to the 7th century Saint Mildred the Virgin, daughter of Merewald, sub-king of the West Mercians.
 Of medieval origin, the church was rebuilt to the designs of Sir Christopher Wren following its destruction in the Great Fire of London in 1666.
 One of the few City churches to retain Wren's original fittings into the 20th century, St Mildred's was destroyed by bombs in 1941.
The seventeenth season of the reality series "Hell's Kitchen" (subtitled as "Hell's Kitchen All Stars") began airing on September 29, 2017 on Fox.
 This season marks the first in "Hell's Kitchen" history to have an all star edition as sixteen former contestants return to compete once again, and the winner of this season will receive the position as head chef at the first-ever Gordon Ramsay Hell's Kitchen Restaurant at Caesar's Palace in Las Vegas, Nevada.
 All of the returning chefs made it onto the Black Team in their respective seasons.
 Gordon Ramsay returns as host and head chef, Season 10 winner (and Season 15 sous-chef) Christina Wilson returns as the Red Team's sous-chef, and British chef and Masterchef judge James "Jocky" Petrie becomes the Blue Team's sous-chef.
 Marino Monferrato returns as the maître d'.
Gordon Ramsay at Claridge's was a restaurant owned by Gordon Ramsay and located with Claridge's hotel in Mayfair, London.
 Blackstone Group had enquired about Ramsay's availability to open a restaurant after he was awarded three Michelin Stars at Restaurant Gordon Ramsay.
 It marked the first of a number of restaurants that Ramsay would open at hotels owned by Blackstone.
 It opened in 2001, and by the fourth year was making a profit of £2 million a year.
 Mark Sargeant was the chef de cuisine of the restaurant until 2008, during which time the restaurant was awarded a Michelin star.