1. Mando Brand Assurance - Corporate HQ
2. Hill & Knowlton, EMEA HQ - Regional HQ
3. HeathWallace Ltd
4. GT - Corporate HQ
5. Headcount Field Marketing Limited
6. GroupM, EMEA HQ
7. Grass Roots
8. global3digital
9. Global Sportnet, UK
10. Forward
11. Finsbury
12. Fitch
    1. FITCHLive
13. EWA Bespoke Communications
14. Enfatico - EMEA Hub - Regional HQ
15. Dovetail
16. Clarion Communications
17. BDGworkfutures
18. BDG McColl
19. Banner Corporation
20. All Global Viewing
21. 24/7 Real Media
22. All Global
23. Mindshare
24. Addison Corporate Marketing
25. Added Value
26. Black Cat Direct Ltd.
27. Hill & Knowlton Ltd.
28. Research International Ltd.
29. Mediaedge:Cia Uk Investments Ltd.
30. Mediacom Uk Ltd.
31. Joshua G2 - Corporate HQ
32. KMR Software
33. Lambie-Nairn - Corporate HQ
34. Marsteller
35. MEC Interaction
36. MEC:Access - Corporate HQ
37. Metro - Corporate HQ
38. Management Ventures - Regional HQ
39. Lightspeed Research - Regional HQ
40. KMR Group
41. Landor Associates
42. Kinetic
    1. PrimeAds - Corporate HQ
43. Kantar Operations - Harrison Way - Corporate HQ
44. Kantar Group
45. iconmobile
46. Infratest Burke Asia Pacific Ltd
47. Ogilvyone Management Services,Ogilvy Group UK
48. Grey
49. G2 EMEA Regional HQ - Regional HQ
50. Glendinning Management Consultants
51. GCI Health
52. Young & Rubicam Group Ltd.
53. JWT-EMEA HQ - Regional HQ
54. Everystone Group
55. Business Planning And Research Ltd
56. Digit
57. BMRB
58. brandamp
59. Buchanan Communications
60. Chime Communications Plc
61. Coley Porter Bell
62. Cohn & Wolfe - Regional HQ
    1. AxiCom
63. Clockwork Capital
64. CHI&Partners
65. BPRI
66. Wpp 2005 Ltd. Hythe, (90182)
67. Communique Public Relations Ltd.
68. Vap Group Ltd. Kidlington,
69. Conquest Creative Services -Manchester
70. Spafax Airline Network Ltd.
71. Tyrell Corporation Ltd.
72. Taylor Nelson Sofres Plc
73. Millward Brown Uk Ltd.
74. Brierley & Partners
75. Consumer Health Sciences (Europe HQ)-
76. MattsonJack UK
77. Maxx Marketing
78. MJM