3i Plc

Aberdeen Asset Managers Private Equity Ltd
Advent International Plc
Alchemy Partners LLP
Apax Partners Ltd
August Equity Partners

Barclays Private Equity Ltd
Barclays Ventures Ltd
Blackstone Group International Ltd
Bowmark Capital Ltd
Bridgepoint Capital Partners Ltd

CCMP Capital Advisors LLP
Change Capital Partners LLP
Cognetas LLP
CVC Capital Partners Ltd

Duke Street Capital Ltd
Dunedin Capital Partners Ltd

ECI Partners LLP
Electra Equity Plc

Gilde Investment Management
GI Partners LLP
Gresham LLP

Hermes Private Equity Ltd
HG Capital LLP

LDC Ltd
Lime Rock Partners

Merrill Lynch Private Equity Group
MidOcean Capital Partners LLP

Nikko Principal Investments Ltd

Phoenix Equity Partners Ltd
Providence Equity Partners Inc.

R20 Ltd
Rutland Partners LLP

TA Associates Ltd
TDR Capital LLP
Texas Pacific Group Europe LLP
Three Delta LLP