| | PR Agency Name | Location |  |  |  |  |
 | Fluency | .33a Claremont Gardens
Marlow
Bucks [Berkshire] [South East] [England] | |  | |  |
 | FMCm Associates | .Colonial Bldgs, 59-61 Hatton Gdn, London.
| | | | |
 | Fnik | .155 Curtain Road, Shoreditch, London
| | | | |
 | Focus PR Ltd | .6th floor
9 Kingsway
London
| |  | | |
 | Focus PR Ltd | .7-9 Swallow Street, St James, London
| | | | |
 | Fodor Wyllie | .8 Princess Mews <BR> Horace Road <BR> Kingston-upon-Thames<BR> Surrey [Greater London] [South East] [England] | |  | | |
 | Food & Other Matters | .58 Blythe Road, Hammersmith, London [Greater London] [South East] [England] | | | | |
 | Footprint Impression Management | .1200 Century Way
Thorpe Park
Leeds [West Yorkshire] [North East] [England] | |  | | |
 | Force 5 PR Ltd | .33 -34 Warple Way, London [Greater London] [South East] [England] | | | | |
 | Ford Public Relations | .16 The Shearings, Hook Norton [Oxfordshire] [South East] [England] | |  | | |
 | Forest Fairway Media | .37 Market Street, Bradford on Avon
| | | | |
 | Forge Public Relations | .8 Alexandra Road, London [Greater London] [South East] [England] | | | | |
 | Forster Company | .49 Southwark Street, London [Greater London] [South East] [England] | |  | | |
 | Forthright | .
| | | | |
 | Forthwrite Communications | .6 Broadgait Green, Gullane [East Lothian] [Lothian] [Scotland] | | | | |
 | Forum for Communication | .24 Parc Nant Celyn,Efail Isaf,Pontypridd,Mid Glamorgan [Rhondda Cynon Taff] [South Wales] [Wales] | | | | |
 | Foster Rowsell Corporate Affairs (Media Matters) | .The Studio, 1 Wherry Lane, Ipswich, Suffolk
| | | | |
 | Foster-Berry Associates | .The Chemistry Lab, 57 Kingsway Place, Finsbury, London
| | | | |
 | Foundation | .9 Ashworths, Canvey Island, Essex [Essex] [South East] [England] | | | | |
 | Four Communications | .1st Floor, Communications House,48, Leicester Square,London,
| |  | | |