- C & C
- R C Ayres Building & Roofing Services Ltd
- T & C Bainbridge
- J C Colourlab
- L C Communications Ltd
- M C Construction (Cleveland) Ltd
- M C J Contractors Ltd
- M C S Contracts Ltd
- D C Daniels
- D C Daniels
- J C Dolan
- A C Electrical & Data Ltd
- I C S (Europe)
- A C Finance Ltd
- K & C Flooring Contractors Ltd
- G C Gray
- S C Henderson & Son
- C & C International Horse Transport
- H C S Investigations Ltd
- E C Jarred (MSS) Ltd
- K C Knitting & Crafts
- A C J Leisure
- J C Marr
- R C McInnes Ltd
- A C Merryweather (Security) Ltd
- D C T (Middlesbrough) Ltd
- L C P Office Supplies
- J C Pearson
- M C Phalp
- S C S PLC
- R C Prasad
- A C Services Ltd
- S C Stockdale
- G C A Tankmasters (UK) B V Ltd
- D C G Tiling
- G C A Transport
- M C Ware Ltd
- C4 Solutions
- Cabello
- Caedmon Primary School
- CAFCASS
- Cafe Pronto
- Cafe Sorelle
- Cairnes
- Calaquo
- Caldicotes County Primary School
- Caletrim Fabricators Ltd
- Calibre Recruitment
- California Youth Centre
- Callers Pegasus Travel Service Ltd
- Calm Asylum
- Calor Gas Ltd
- W Calvert
- Cambridge Hotel
- Cameo
- Cameo
- Camera Man
- Camera Mart
- B Campbell
- Campbell Machine Co Ltd
- Campus Lifestyle Ltd
- Cancer Research UK
- Cane's
- Cannon Park Cafe
- Cannon Park Tyre Exchange
- Canny Caff
- Canopies (North East)
- Cape Industrial Services Ltd
- Capital Finance
- Caprice
- Captain Cook Birthplace Museum
- Captain Cook Primary School
- Captain Cook Schoolroom Museum
- Captain Cook Square
- Captain Cook Square Car Park
- Car Electrics
- Car-Kit Services Ltd
- Car Sound
- Car Source
- Carahill Services
- Card Crazy
- Card Factory
- Card Warehouse
- Cards R Us
- Care At Work
- Carelink
- Careys
- Cargo Fleet Stores
- Cargo Pallets Ltd
- Carillion Construction Training
- Carl Hamm (UK)
- Carlton Bank Stud
- Carlton Caravan Park
- Carlton Education Centre
- Carlton & Faceby C Of E Primary School
- Carlton Sturman (Insurance Brokers) Ltd
- Carol's Plaice
- Carp Crazy
- Carpet Crafts Of Stokesley
- Carpet Line Direct
- Carpetright PLC
- Carter Bequest Hospital
- Cartridge World
- Carvello Memerable Photo
- Casablanca Pizzaria
- Case Builders
- Cash Converters
- Cash Generator Ltd
- Casio & Samsung Cash Registers
- Casper Shipping Ltd
- Caspian Access & Plant Hire Ltd
- Cassadys
- Castle Alarms
- Castle Carpets
- Castle Construction Maintenance
- Castle Construction (North East) Ltd
- Castlegate Electrics
- S Castleton
- Catalogue Bargain Shop
- Caterers Friend
- Caterleisure
- Cave Adams
- CDM Recruitment
- CDS Disabled Supplies Ltd
- Ceatta
- Ceetak Engineering Ltd
- Celebration Crystal
- Celebration Fireworks
- Celebrations
- Celestial
- Celestial Windows
- Centex Refinishes
- Central Express
- Central Library
- Central Mosque
- Central Park
- Century Auto Refinishers
- Chambers
- Chameleon
- Champion Sport
- Chance & Hunt
- Chancellors Associates
- Chandlers Ridge Primary School
- Changes
- Changing Rooms (GB) Ltd
- Chapman Court
- Chapman Stewart Advertising Ltd
- E Chappelow
- Chapters
- Chapters
- Character Joinery
- Charlbury Road Community Centre
- Charles Clinkard Ltd
- Charles Mini-Market
- Charles O'rourke
- Charles Turner & Sons (Farmers Friends) Ltd
- Charlotte's Cuisine
- Chefs Independant
- Chekkers
- 5 Chelmsford Road
- Chelsea Snack Bar
- Cheltenham & Gloucester PLC
- Chemi Technology Ltd
- Cherry Hill Nurseries
- Chic Hair Design
- Chicago Rock Cafe
- Child Development Centre & Assessment Nursery
- Childcare Plus
- Childrens Service For The Visually Impaired
- China Buffet King
- China Gardens
- China Hut
- China Wok
- Chinese Chop Suey House
- Chinese Herbal Medicine & Healthcare
- Chinos
- Chinos Pizza
- Chintz
- Chipchase Manners & Co Chartered Accountants
- Chipp In
- Chips World
- Chisholm Bookmakers
- Chisholm Bookmakers
- Chisholm Bookmakers
- Choudreys
- Chris Carabine
- Chris Jones
- Chris Manson
- Chris Myers
- Chris's Parmesan House
- Chris White
- Christ Church
- Christ Church C Of E Church
- Christadelphians
- Christines Hair Salon
- Christopher Hayes
- Ciro Pearls Ltd
- Citifinancial
- Citizens Advice Bureau
- Citizens Advice Bureau
- City Cars
- City Centre Training Ltd
- City Electrical Factors Ltd
- City Electrical Factors Ltd
- Claire's Accessories (UK) Ltd
- Clairville Stadium
- Clarences
- Clarences Community Farm
- Clarks Butchers
- Class Led
- Classic Beauty
- Classic Carpets & Blinds
- Classic Carpets & Blinds
- Classic Interiors
- Classics
- Classique Windows & Conservatories
- Cleargold Contractors
- Cleopatra
- Cleveland Accredited Training Centre Ltd
- Cleveland Auto Electrics
- Cleveland Auto Services & Hire
- Cleveland Autotune
- Cleveland Bay Hotel
- Cleveland Business Centre
- Cleveland Cable Co Ltd
- Cleveland Car Centre
- Cleveland Carpet Services
- Cleveland Cascades Ltd
- Cleveland Chiropractic Clinic
- Cleveland Chroming Co
- Cleveland Clearwaste
- Cleveland College Of Art & Design
- Cleveland Computer Repair (Mobile)
- Cleveland Conservatories Ltd
- Cleveland Containers Ltd
- Cleveland Crafts Centre
- Cleveland Disability Forum
- Cleveland Diversion Team
- Cleveland Elite Models
- Cleveland Emergency Planning Unit
- Cleveland Family Mediation Service
- Cleveland Health Centre
- Cleveland Heat Treatment Ltd
- Cleveland Holidays
- Cleveland Housing Advice Centre
- Cleveland Huntsman
- Cleveland Imprints
- Cleveland Innovation Ltd
- Cleveland Insurance & Financial
- Cleveland Leisure Ltd
- Cleveland Metals Ltd
- Cleveland Orthodontics
- Cleveland Panels
- Cleveland Police
- Cleveland Police
- Cleveland Police
- Cleveland Potash Ltd
- Cleveland Powerclean
- Cleveland Pregnancy Support Services
- Cleveland Refrigeration Co Ltd
- Cleveland Retail Systems Ltd
- Cleveland Rewinds
- Cleveland Roofing Centre
- Cleveland Search & Rescue Team
- Cleveland Security
- Cleveland Security Alarms
- Cleveland Shopping Centre
- Cleveland Show
- Cleveland Sitesafe
- Cleveland Static Guarding
- Cleveland Stationery
- Cleveland Supertan
- Cleveland Taxis
- Cleveland Timber Supplies Ltd
- Cleveland Trade Unionists
- Cleveland Trailer Centre
- Cleveland Tuning
- Cleveland Up & Over Door Co
- Cleveland Woodcraft
- Cleveland Youth Association
- Clicktick
- Cliffs Auto Salvage
- Clinton Cards PLC
- Clippers
- Clive Road Residential
- Club Electronics
- CLV Foster & Sons Ltd
- CNC Machining Ltd
- Coaches
- Cobra (Middlesbrough) Ltd
- Cochranes Sports & Social Club
- Cockfield Knight & Co Ltd
- Cohnan Knight
- Col's
- Coldtech Regfrigeration Services
- Colin Brown
- Colin Cheng
- Colin Old
- Colin Rowe
- Coliseum Travel
- Colleys
- Collier Property Management
- Colour Box
- COLU
- Combi (UK)
- Combi UK Plumbing & Heating
- Combi UK Plumbing & Heating Ltd
- Commercial Coaches
- Commercial Consultants
- Commercial Hotel
- Commercial Taxis
- CommunaLink
- Community
- Community Campus Housing Co-operative (Cleveland) Ltd
- Community Care Association
- Community Homecare Services
- Community Ventures Ltd
- Compass Detective Agency
- Complete Bliss
- Complimentary Caterers
- Compril
- Computer World Direct
- Comtracks (UK)
- Concept
- Concept Solutions
- Connexions Mentoring Service
- Connexions (Tees Valley)
- O'Connor Rooftrim
- Conoco Phillips
- Contemporary Franchising
- Contemporary Hair Dressing
- Convent Of Mercy
- Cool Blue
- Cooper & Flower Ltd
- Cooper & Flower Ltd
- Cooper & Flower Ltd
- Cooper & Kime Ltd
- D Cooper (Pharmacy) Ltd
- Coopland
- Coopland & Son (Scarborough) Ltd
- Cornfield Carpets
- Corpus Christ R C Primary School
- Corpus Christi R C Church
- Corus Metal Shops
- Corus UK Ltd
- Cory Bros Shipping Agency Ltd
- Cory Bros Shipping Agency Ltd
- Cossins Garage
- Costcutter
- Cottage Garden
- Coulby Farm
- Coulby Flower Shop
- Coulby Midwives Clinic
- Coulby Newham Baptist Church
- Coulby Newham Fire Station
- Coulby Newham Fish Bar
- Coulby Newham Plumbing & Heating Ltd
- Coulby Newham Post Office
- Coulby Newham Youth & Community Centre
- Country Wide
- Countryside Catalogue Ltd
- Countrywide
- County Print
- County & Regional
- County School Of Motoring
- Cousins & Co
- Covercat Spray Systems Ltd
- Cowie Technology Group Ltd
- M Cowling
- Craig
- Craig & Co
- Creaseless
- Creative Cutting Services Ltd
- Crescent Road Post Office
- Crimewatch Systems Ltd
- Crimewatch Systems Ltd
- Crinson Liddle Construction Ltd
- Criteria Hairdressers Supplies
- Croft Avenue Fisheries
- Croft Interiors
- Crofts
- Cromwell Road Primary School
- Crossfell Health Centre
- Crown Crest Inns
- Crown Damp-Proofing
- Crown Decorator Centre
- Crown & Mitre
- Crown Prosecution Service
- Crusader Cleaning Services
- Crutes
- Crystal Clean
- CSV Media
- Cucumber Hair Design
- Cudim Credit Unions
- Cumberland Road
- Curio Collections
- Curl Up 'n' Dye
- Currys
- Cut Above
- Cut Price Carpets
- Cut Price Wallpaper
- Cyber 42
- Cygnet Centre
- Cynergy
- Cypress Road Community Centre