| | PR Agency Name | Location |  |  |  |  |
 | I Kandi | . [Monmouthshire] [South Wales] [Wales] | |  |  |  |
 | i-AD Marketing & PR | .18 Napier Court, Gander Lane, Oxcroft Way, Barlborough, Chesterfield [Derbyshire] [East Midlands] [England] | |  | | |
 | I-Image Communications Ltd | .Museum House 25 Museum Street, London.
| | | | |
 | I-Mage Communications | .Museum House, 25 Museum Street, Soho, London
| | | | |
 | Iain Smyth Associates | .Llanrothal CourtLlanrothal,Monmouth,Gwent [Monmouthshire] [South Wales] [Wales] | | | | |
 | Ian Hood Associates | .52 Brewery Road
Horsell
Woking
Surrey GU21 4NA [Surrey] [South East] [England] | |  | |  |
 | Ian Martin PR | .27 Great Pulteney Street, Bath [Bristol Avon] [South West] [England] | 1 | | | |
 | Ian McCarthy Public Relations | .St. Peters, Station Terrace, East Aberthaw, Barry [Vale of Glamorgan] [South Wales] [Wales] | | | | |
 | Ian Monk Associates | .26-28 Hammersmith Grove, London [Greater London] [South East] [England] | |  | | |
 | Ian Morton | .Palfreys Fulshaw Park,Wilmslow,Cheshire [Cheshire] [North West] [England] | | | | |
 | Ian Raitt Public Relations | .20 Clayton Av, Hassocks. [West Sussex] [South East] [England] | | | | |
 | IanMartinPRb | .27 Great Pulteney Street Bath [Bristol Avon] [South West] [England] | | | |  |
 | IAS SMARTS | .157, High St,Holywood,County Down [County Down] [Ulster] [Northern Ireland] | |  | | |
 | IAS SMARTS PLC | .157-159 High StreetHolywood,Co. Down, [County Down] [Ulster] [Northern Ireland] | | | | |
 | icas public relations | .Russell Chambers
The Piazza
Covent Garden
London
| |  | |  |
 | ICAS Public Relations | .Russel Chmbs, 1 The Piazza, London.
| | | | |
 | Icis | .20 City Road, Shoreditch, London
| | | | |
 | Icon Public Relations | .London House, 266 Fulham Road, Kensington, London [Greater London] [South East] [England] | | | | |
 | Idea Generation Co Ltd | .10 Greenland Street, Regent\'s Park, London [Greater London] [South East] [England] | | | | |
 | Ideal Solutions | .Highlands Farm Highlands Lane Henley Oxon [Berkshire] [South East] [England] | |  | |  |