| | PR Agency Name | Location |  |  |  |  |
 | Lighthouse Promotions Ltd | .22a Station Road, Netley Abbey, Southampton [Hampshire] [South East] [England] | | | | |
 | Lighthouse Public Relations | .Palladium House,
11 Argyll Street,
London
| |  | | |
 | Lime Tree Communications | . [Bournemouth] [South East] [England] | |  | |  |
 | Limelight Public Relations | .Audley House, 13 Palace Street, Westminster, London
| |  | | |
 | Limelight Publicity & Promotions | .3 Shaftesbury Court,Plymouth,Devon [Devon] [South West] [England] | | | | |
 | Limm Communications Ltd | .The Old Stables Hawkridge Hill,Frilsham,Hermitage,Thatcham,Berkshire [Berkshire] [South East] [England] | | | | |
 | Lincoln Beasley | .22 London Rd, Chipping Norton. [Oxfordshire] [South East] [England] | | | | |
 | Linda Graham PR and Marketing | .3/5 Wilson's Court 134 Canongate Edinburgh [City of Edinburgh] [Lothian] [Scotland] | |  | |  |
 | Linda Land Public Relations | .40 Bowling Green La, Clerkenwell, London.
| | | | |
 | Lindaland PR | .
| | | | |
 | Lindaland PR | .Unit 16, 40 Bowling Green Lane, Finsbury, London
| 1 |  | | |
 | Linden Marketing | .Linden House,<BR> 61 St James's Road,<BR> Croydon
| |  | | |
 | Lindsay Brown Associates Ltd | .142 Lower Marsh, Vauxhall, London [Greater London] [South East] [England] | |  | | |
 | Lindsell Marketing | .45 Conduit Street, Mayfair, London
| |  | | |
 | Lines Of Communication | .12 St Johns Rd, Tunbridge Wells Kent [Kent] [South East] [England] | | | | |
 | Lingo Pr & Marketing | .64 Elmwood Road, London [Greater London] [South East] [England] | 1 | | | |
 | Link Marcom Ltd | .5 Wyatt Court, Hinton St. George, Somerset [Somerset] [South West] [England] | | | | |
 | Link Media | .Abbey House18-24, Stoke Road, Slough,Berkshire [Buckinghamshire] [South East] [England] | | | | |
 | Links Media | .Elsmere, Westfield Road, Cupar, Fife [Fife] [Fife] [Scotland] | |  | | |
 | Lionheart Marketing Communications | .Little Bridge Business Pk,Oil Mill Lane,Clyst St. Mary,Exeter,Devon [Devon] [South West] [England] | |  | | |