Salisbury, who operates six sites including the Saxon Mill in Warwick and the Boot at Lapworth, has worked with Mitchells & Butlers since 2004 developing what M&B now calls its Premium Country Dining format.
One of Salisbury's pubs, the Orange Tree at Chadwick End in Warwickshire, was used as the template upon which the project was developed.
Greene King Pub Company was named Food Operator of the Year (branded) and also scooped Food Concept of the Year for Hungry Horse.
Tom and Ed Martin's London-based ETM Group won the Food Operator of the Year (unbranded) award.
Winner of the Steak Pub of the Year category was Youngs' site the Lass'O Richmond Hill in London.
The winner of the All-day Dining Pub award was Peach Pub Company's Almanack in Kenilworth, Warwickshire, while the Italian Food Pub award was won by Oakman Inns' Red Lion, Water End, Hertfordshire.
Pub Chef of the Year
The overall title in the award's chefs' competition of Pub Chef of the Year 2011 was won by Jean-Phillipe Bidart, head chef at the Millbrook Inn, South Pool, Devon, which is owned by Ian Dent and Diana Hunt.
Young Pub Chef of the Year went to George Allan, chef de partie at The Cock Pub & Restaurant in Hemingford Grey, Cambridgeshire.
The Great British Pub Food Awards are run by BigHospitaliaty's sister publication The Morning Advertiser.
The full list of winners at the Great British Pub Food Awards 2011 are:
All Day Dining Pub of the Year
The Almanack, Kenilworth
Pie Pub Chef of the Year
Craig Hennessey, The Queen’s Head Inn
Food Concept of the Year
Hungry Horse, Greene King
Food Operator of the Year (unbranded)
ETM Group
Food Operator of the Year (branded)
Greene King Pub Company
Meat Pub Chef of the Year
Karl Mainey, The Crown Inn, North Yorkshire
Seafood Pub Chef of the Year
Robin Syndercombe, The Duke of Cumberland Arms, Fenhurst, West Sussex
Game Pub Chef of the Year
Richard Knighting, Marlborough Tavern, Bath
Desserts Pub Chef of the Year
Andy Snowling, The Hunny Bell, Norfolk
Team of the Year
Jean-Philippe Bidart and Georgia Jackson, The Milbrook Inn, South Pool, Devon
Curry Pub Chef of the Year
Indunill Upatissa, Noel Arms Hotel, Gloucestershire
Roast Pub Chef of the Year
Rebecca White, The Full Moon, Nottingham
Fish and Chips Pub Chef of the Year
Justin Brown, The Sun Inn, Hampshire