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- 123Cains Brewery
- 124Caister Holiday Park
- 125Cala Gran Holiday Park
- 126Caledonian Hotel
- 127Caledonian Hotel Fort William
- 128Caley Hall Hotel
- 129Cally Palace Hotel and Golf Course
- 130Camber Sands Holiday Park
- 131Cambridge Bar Hill Hotel | Signature Collection by Best Western
- 132Cambridge Belfry Hotel & Spa
- 133Cambridge Brew House
- 134Cambridge Hotel
- 135Cambridgeshire Hunter
- 136Camden Head
- 137Cameo & Myu Bar Bournemouth
- 138Cameo Guildford
- 139Cameo Picturehouse
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- 141Cameron House
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- 144Cantley House Hotel
- 145Canton
- 146Cape Cornwall Golf & Leisure
- 147Cape London
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- 149Captains Cabin
- 150Captains Club Hotel
- 151Carden Park Chester
- 152Cardiff Arms Park Marquee
- 153Cardiff City Stadium
- 154Cardiff Cottage
- 155Cardiff Golf Club
- 156Cardiff Marriott Hotel
- 157Cardiff Students' Union
- 158Cardinal’s Hat
- 159Careys Manor Hotel & SenSpa
- 160Cargo
- 161Carlisle Racecourse
- 162Carlisle Station Hotel | Sure Collection by Best Western
- 163Carlton Club
- 164Carlton Hotel Blanchardstown
- 165Carlton Hotel Great Yarmouth
- 166Carluccio's Aberdeen
- 167Carluccio's Bentalls, Kingston Upon Thames
- 168Carluccio's Berkhamsted
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- 171Carluccio's Bluewater
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- 176Carluccio's Brunswick
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- 178Carluccio's Cambridge
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- 180Carluccio's Canterbury
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- 182Carluccio's Chester
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- 185Carluccio's Cobham
- 186Carluccio's Covent Garden
- 187Carluccio's Dorchester
- 188Carluccio's Ealing
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- 190Carluccio's Esher
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- 192Carluccio's Fulham Road
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- 195Carluccio's Heathrow Terminal 5
- 196Carluccio's High Street Kensington
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- 199Carluccio's Leamington Spa
- 200Carluccio's Leeds
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- 217Carluccio's Reading
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- 221Carluccio's Smithfield
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- 225Carluccio's St Christopher's Place
- 226Carluccio's St John's Wood
- 227Carluccio's St Pancras
- 228Carluccio's Stratford upon Avon
- 229Carluccio's Teddington
- 230Carluccio's Trinity Leeds
- 231Carluccio's Tunbridge Wells
- 232Carluccio's Walton on Thames
- 233Carluccio's Waterloo
- 234Carluccio's Watford
- 235Carluccio's Westfield
- 236Carluccio's Wimbledon
- 237Carluccio's Windsor
- 238Carluccio's Worcester
- 239Carne Arms
- 240Carnglaze Caverns
- 241Carom at Meza
- 242Carousel & Home Leeds
- 243Cartmel Racecourse
- 244Casa Hotel Chesterfield
- 245Casino Guildford
- 246Castle & Ball, Marlborough
- 247Castle Green Hotel
- 248Castle Hotel
- 249Castle Hotel, Lampeter
- 250Castle House Hotel
- 251Castle Inn, Bakewell
- 252Castle Inn, Cambridge
- 253Castle Ward
- 254Castle, Bedford
- 255Castlemartyr Resort
- 256Catchems Inn, Swadlincote
- 257Catherine Wheel
- 258Cavendish Banqueting
- 259Cayo, Cardiff
- 260CCT Venues Plus-Bank Street
- 261CCT Venues Plus-South Quay
- 262Cedar Court Hotel - Huddersfield / Halifax
- 263Cedar Court Hotel Bradford
- 264Cedar Court Hotel Harrogate
- 265Cedar Court Hotel Huddersfield
- 266Cedar Court Hotel Wakefield
- 267Cedar Tavern, Blackpool
- 268Cedars Inn Barnstaple
- 269Celtic Harmony Camp
- 270Central
- 271Central Perk Chester
- 272Century Club
- 273Ceylan InterContinental Istanbul
- 274ChachaBuchi
- 275Chalkhill Blue, Andover
- 276Chamberlain's of London
- 277Champagne Charlies
- 278Chancery Court Hotel London
- 279Chandos Arms
- 280Channings
- 281Chapel 1877
- 282Charingworth Manor Hotel
- 283Charlotte Street Hotel
- 284Charlton Hall
- 285Charnock Farm
- 286Chart Hills Golf Club
- 287Chartridge Park Golf Club
- 288Chase
- 289Chase Newcastle
- 290Chase Sunderland
- 291Chasley Hotel
- 292Chateau Impney Hotel & Exhibition Centre
- 293Cheadle House
- 294Cheese Rollers Pub
- 295Chelmer Inn
- 296Chelmsford City Racecourse
- 297Chelsea Football Club
- 298Chelsea Physic Garden
- 299Chelsea Potter
- 300Cheltenham Chase Hotel
- 301Cheltenham Ladies' College
- 302Cheltenham Racecourse
- 303Chepstow Racecourse
- 304Chequers Inn
- 305Chequers Inn Hotel
- 306Chequers Inn, Hinckley
- 307Chequers Inn, Knebworth
- 308Chequers, Brighton
- 309Chequers, Henley on Thames
- 310Chequers, Marlow
- 311Chequers, Wallingford
- 312Chequers, Wantage
- 313Chequers, Watlington
- 314Cherry Tree, Chinnor
- 315Cherry Tree, Harleston
- 316Cherry Tree, Henley on Thames
- 317Cherry Tree, Woodbridge
- 318Chesfield Downs Golf & Country Club
- 319Chesford Grange Hotel
- 320Cheshire Cheese Inn, Broadbot
- 321Cheshire Showground
- 322Cheshunt Marriott Hotel
- 323Chessington World of Adventures Resort
- 324Chester Cathedral
- 325Chester Grosvenor Hotel
- 326Chester Racecourse
- 327Chester Station Hotel | Sure Collection by Best Western
- 328Chester Zoo
- 329Chesterfield Football Club
- 330Chevin Country Park Hotel & Spa
- 331Cheyne Walk Brasserie
- 332Chicago's Chelmsford
- 333Chicago's Hanley
- 334Chicago's Kings Lynn
- 335Chicago's Stourbridge
- 336Chicago's Stratford Upon Avon
- 337Chicheley Hall
- 338Chichester Watersports Centre
- 339Childwall Abbey Hotel, Liverpool
- 340Chill Factore
- 341Chill, Canterbury
- 342Chilston Park Hotel
- 343Chiltern Hundreds
- 344China Fleet Country Club
- 345Chinawhite
- 346Chiquito Aberdeen - Beach
- 347Chiquito Aberdeen - Union Square
- 348Chiquito Ashford
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- 351Chiquito Belfast - Victoria Square
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- 361Chiquito Castleford - Xscape
- 362Chiquito Chelmsford
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- 364Chiquito Cheshire Oaks
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- 402Chiquito Watford
- 403Chiquito Wolverhampton
- 404Chiquito York - Clifton Moor
- 405Chiswell Street Dining Rooms
- 406Chiswick Moran Hotel
- 407Chobham Golf Club
- 408Chor Bizarre
- 409Chow Down Winter Village
- 410Christ Church Spitalfields Venue
- 411Christmas @ The Grand Hall with Impulse Events
- 412Christmas @ The HC with Impulse Events
- 413Church Farm Holiday Village
- 414Church House
- 415Chy An Albany Hotel
- 416Cicada Restaurant
- 417CIM Business Centre
- 418Cinema City - Norwich
- 419Cinnamon Club
- 420CIRCUIT Bristol
- 421CIRCUIT Cardiff
- 422CIRCUIT Kingston
- 423Circuit York
- 424Circus
- 425Circus Circus
- 426Cirencester Park Polo Club
- 427Cirque de Vintage at The Bloomsbury Big Top
- 428Citation - Exclusive Hire Venue
- 429Citrus Hotel Coventry
- 430Citrus Hotels Eastbourne
- 431City Arms
- 432City Banqueting
- 433City Boot
- 434City Cruises
- 435City Cruises London
- 436City Cruises York
- 437City Flogger
- 438City Gate Hotel
- 439City Golf Clubs
- 440City Hotel London
- 441City of London Club
- 442City Pipe
- 443City Vaults
- 444Civil Service Club
- 445Clapham Grand
- 446Clapham Picturehouse
- 447Clarence Hall
- 448Clarence House Country Hotel & Restaurant
- 449Claridges
- 450Clarion Charlecote Pheasant
- 451Claymore Hotel
- 452Clayton Hotel Belfast
- 453Clayton Hotel Birmingham
- 454Clayton Hotel Cardiff
- 455Clayton Hotel Manchester City Centre
- 456Clayton's Marlow
- 457Cleatham Hall
- 458Cleeve House
- 459Clermont Charing Cross
- 460Clermont Victoria
- 461Clevedon Hall Estate
- 462Cliffs Pavilion
- 463Clifton
- 464Clifton Arms
- 465Clock Face, Prescot
- 466Clothiers Arms, Huddersfield
- 467Club Alto
- 468Club Aquarium
- 469Club Batchwood St Albans
- 470Club Quantum
- 471Coach & Horses
- 472Coaching Halt, Crawley
- 473Coachmakers Arms, Wallingford
- 474Coalport Tavern, Telford
- 475Coast Bars
- 476Coastal Cruises Poole
- 477Cobblers Hall, Newton Aycliffe
- 478Cock Crow Inn, Hebburn
- 479Cock Inn, North Crawley
- 480Cock Inn, Sudbury
- 481Cock Inn, Wootton
- 482Cockett Inn
- 483Cold Harbour
- 484Coldra Court Hotel
- 485Coleshill Hotel, Warwickshire
- 486College Farm, Swindon
- 487Colliers Arms
- 488Colliers Rest, Leigh
- 489Collingtree Park Golf Club
- 490Colonel Porters Newcastle
- 491Colonies
- 492Colwick Hall Hotel
- 493Colworth Park Conference & Events
- 494Colworth Park Conference & Events
- 495Combe Grove Manor Hotel
- 496Combe Haven Holiday Park
- 497Commercial Hotel
- 498Compasses
- 499Compton Verney
- 500Concrete @ Pizza East
- 501Conference Aston
- 502Conference Centre Oxford
- 503Conference@OxfordSaid - Egrove Park
- 504Conference@OxfordSaïd - Park End Street
- 505Connaught
- 506Conrad Dubai
- 507Conrad Istanbul
- 508Consort Hotel
- 509Cookhouse and Pub Sandown Cliffs
- 510Coombe Wood Golf Club
- 511Coopers Arms
- 512Copdock Hall
- 513Copper Box Arena
- 514Coppid Beech Hotel
- 515Copt Oak, Markfield
- 516Copthorne Hotel Cardiff
- 517Copthorne Hotel Manchester
- 518Copthorne Hotel Merry Hill Dudley
- 519Copthorne Hotel Newcastle
- 520Copthorne Hotel Plymouth
- 521Copthorne Hotel Sheffield
- 522Copthorne Hotel Slough-Windsor
- 523Copthorne Tara Hotel London Kensington
- 524Coq d’Argent Restaurant
- 525Coral Brighton & Hove Greyhound Stadium
- 526Corby Bridge Inn, Great Corby
- 527Corinium Hotel & Restaurant
- 528Corinthia Hotel London
- 529Corner Cupboard, Glossop
- 530Corney & Barrow Broadgate Circle
- 531Corney & Barrow Canary Wharf
- 532Corney & Barrow CityPoint
- 533Corney & Barrow Exchange Square
- 534Corney & Barrow Fleet Place
- 535Corney & Barrow Lime Street
- 536Corney & Barrow Mason's Avenue
- 537Corney & Barrow Monument
- 538Corney & Barrow New Street Square
- 539Corney & Barrow Old Broad Street
- 540Corney & Barrow Paternoster Square
- 541CorpAcq Stadium
- 542Corr's Corner Hotel
- 543Corrigan's Mayfair
- 544Corrigans, Blackburn
- 545Corse Lawn Hotel
- 546Cortes House
- 547Corus Hyde Park
- 548Cosmopolitan Hotel
- 549Cosy Club Basingstoke
- 550Cosy Club Bath
- 551Cosy Club Birmingham
- 552Cosy Club Bournemouth
- 553Cosy Club Brindleyplace
- 554Cosy Club Bristol
- 555Cosy Club Canterbury
- 556Cosy Club Cardiff
- 557Cosy Club Cardiff Bay
- 558Cosy Club Chelmsford
- 559Cosy Club Cheltenham
- 560Cosy Club Chester
- 561Cosy Club Coventry
- 562Cosy Club Derby
- 563Cosy Club Durham
- 564Cosy Club Exeter
- 565Cosy Club Guildford
- 566Cosy Club Hereford
- 567Cosy Club Leeds
- 568Cosy Club Leicester
- 569Cosy Club Lincoln
- 570Cosy Club Liverpool
- 571Cosy Club Manchester
- 572Cosy Club Milton Keynes
- 573Cosy Club Norwich
- 574Cosy Club Nottingham
- 575Cosy Club Oxford
- 576Cosy Club Plymouth
- 577Cosy Club Portsmouth
- 578Cosy Club Reading
- 579Cosy Club Salisbury
- 580Cosy Club Sheffield
- 581Cosy Club Stamford
- 582Cosy Club Taunton
- 583Cosy Club Worcester
- 584Cosy Club York
- 585Cote Restaurant Barbican
- 586Cote Restaurant Bath
- 587Cote Restaurant Birmingham
- 588Cote Restaurant Blackheath
- 589Cote Restaurant Bluewater
- 590Cote Restaurant Brighton
- 591Cote Restaurant Bristol
- 592Cote Restaurant Cambridge
- 593Cote Restaurant Camden
- 594Cote Restaurant Cardiff
- 595Cote Restaurant Charlotte Street
- 596Cote Restaurant Chichester
- 597Cote Restaurant Chiswick
- 598Cote Restaurant Ealing
- 599Cote Restaurant Esher
- 600Cote Restaurant Exeter
- 601Cote Restaurant Farnham
- 602Cote Restaurant Guildford
- 603Cote Restaurant Hampstead
- 604Cote Restaurant Highgate
- 605Cote Restaurant Horsham
- 606Cote Restaurant Islington
- 607Cote Restaurant Kensington
- 608Cote Restaurant London Bridge
- 609Cote Restaurant Market Place
- 610Cote Restaurant Notting Hill
- 611Cote Restaurant Oxford
- 612Cote Restaurant Parsons Green
- 613Cote Restaurant Reading
- 614Cote Restaurant Richmond
- 615Cote Restaurant Salisbury
- 616Cote Restaurant Sloane Square
- 617Cote Restaurant Soho
- 618Cote Restaurant St Albans
- 619Cote Restaurant St Christopher's Place
- 620Cote Restaurant St Martin's Lane
- 621Cote Restaurant St Pauls
- 622Cote Restaurant Tavistock Street
- 623Cote Restaurant Tunbridge Wells
- 624Cote Restaurant Wimbledon
- 625Cotswold House Hotel and Spa
- 626Cottage
- 627Cottesmore Hotel, Golf & Country Club
- 628Cotton Factory
- 629Cottons Hotel & Spa
- 630Cottonworth Vineyard
- 631Coulsdon Manor and Golf Club
- 632Country House Weddings – Clearwell Castle & The Clear Well
- 633Country House Weddings – Gosfield Hall
- 634Country House Weddings – Leez Priory
- 635Country House Weddings – St Audries Park
- 636Countryman
- 637County Armagh Golf Club
- 638County Arms Truro
- 639County Hotel
- 640County Hotel - Carlisle
- 641County Hotel Chelmsford
- 642County Hotel Llandudno
- 643Court Garden House
- 644Court Royale
- 645Courtfield
- 646Courthouse DoubleTree by Hilton Hotel London - Regent Street
- 647Courtrooms at Browns
- 648Courtyard by Marriott Glasgow Airport
- 649Courtyard by Marriott Oxford South
- 650Courtyard Irkutsk City Center
- 651Courtyard Worcester
- 652Covent Garden Hotel
- 653Coventry City Football Club
- 654Coventry Conferences
- 655Coyote Wild
- 656Crabwall Manor Hotel & Spa
- 657Craig Tara Holiday Park
- 658Cranberry Farm Cranbrook
- 659Crathorne Hall Hotel
- 660Craven Heifer, Ingleton
- 661Craven Heifer, Stainforth
- 662Crawley Town Football Club
- 663Crealy Theme Park & Resort
- 664Crewe & Harpur, Derby
- 665Crewe Hall Hotel & Spa
- 666Cricketers Inn, Epsom
- 667Crieff Hydro Hotel
- 668Crockfords Club
- 669Crofters, Barrow in Furness
- 670Cromwell Lodge, Banbury
- 671Cromwell's Bar Café, Huntingdon
- 672Cronkinson's Farm, Nantwich
- 673Crooked Billet, Henley on Thames
- 674Crooked Billet, Hull
- 675Crooked Billet, Wokingham
- 676Cross Inn
- 677Cross Keys Hotel
- 678Cross Keys, Aldeburgh
- 679Cross Keys, Guisborough
- 680Cross Keys, Milton Keynes
- 681Cross Keys, Pulloxhill
- 682Cross Keys, Wallingford
- 683Cross Roads Hotel
- 684Crosspool Tavern, Sheffield
- 685Crow Wood Hotel & Spa Resort
- 686Crown Covent Garden
- 687Crown Hall Farm
- 688Crown Inn, Rhayader
- 689Crown Inn, Sandon
- 690Crown Inn, Snape
- 691Crown Inn, St. Neots
- 692Crown Inn, Tingewick
- 693Crown Inn, Witheridge Lane
- 694Crown Moran Hotel
- 695Crown of Crucis Hotel
- 696Crown Tavern, Scarborough
- 697Crown, Henley on Thames
- 698Crown, Reading
- 699Crowne Plaza Basingstoke
- 700Crowne Plaza Birmingham City Centre
- 701Crowne Plaza Birmingham NEC
- 702Crowne Plaza Chester
- 703Crowne Plaza East Midlands Airport
- 704Crowne Plaza Edinburgh - Royal Terrace
- 705Crowne Plaza Felbridge - Gatwick
- 706Crowne Plaza Gerrards Cross
- 707Crowne Plaza Glasgow
- 708Crowne Plaza Heythrop Park - Oxford
- 709Crowne Plaza Hotel Leeds
- 710Crowne Plaza Hotel London-The City
- 711Crowne Plaza Limassol
- 712Crowne Plaza Liverpool - John Lennon Airport
- 713Crowne Plaza Liverpool City Centre
- 714Crowne Plaza London - Battersea
- 715Crowne Plaza London - Gatwick Airport
- 716Crowne Plaza London - Kensington
- 717Crowne Plaza London - Kingston
- 718Crowne Plaza London - St. James
- 719Crowne Plaza London Docklands
- 720Crowne Plaza London Ealing
- 721Crowne Plaza London Heathrow Hotel
- 722Crowne Plaza Marlow
- 723Crowne Plaza Newcastle - Stephenson Quarter
- 724Crowne Plaza Nottingham
- 725Crowne Plaza Plymouth
- 726Crowne Plaza Reading
- 727Crowne Plaza Royal Victoria Sheffield
- 728Crowne Plaza Solihull
- 729Crows Nest
- 730Croydon Hall
- 731Crusting Pipe
- 732Crwys
- 733Crystal Bar & House of Hugo
- 734Crystal Palace Football Club
- 735Cube Bar Kitchen
- 736Cubex Centre Prague
- 737Cullompton Community Centre
- 738Cumberland Hotel Eastbourne
- 739Cumberland View, Morecambe
- 740Cumberwell Park
- 741Curve Theatre
- 742Curzon Canterbury Cinema
- 743Curzon Colchester Cinema
- 744Curzon Kingston Cinema
- 745Curzon Mayfair Cinema
- 746Curzon Oxford Cinema
- 747Curzon Sheffield Cinema
- 748Curzon Victoria Cinema
- 749Cutlers Hall
- 750Cutty Sark
- 751Cwm Talwg