Common use of SIGNATURE PAGE TO SUBSCRIPTION AGREEMENT Clause in Contracts

SIGNATURE PAGE TO SUBSCRIPTION AGREEMENT. Please acknowledge your acceptance of the foregoing Subscription Agreement by signing and returning a copy to the undersigned whereupon it shall become a binding agreement between us. COMMONWEALTH BIOTECHNOLOGIES INC. a Virginia corporation By: /s/ Xxxx X’Xxxxx Name: Xxxx X’Xxxxx, Ph.D. Title: CEO Dated: December 31, 2007 SUBSCRIBER AGGREGATE PURCHASE PRICE & PRINCIPAL AMOUNT OF NOTE CLASS A WARRANTS CLASS B WARRANTS Name of Subscriber: $ 50,000 25,000 6,250 BRIO CAPITAL SELECT LLC Address: 000 X 00XX XXXXXX, XXXXX XXXXX 00X, XXX XXXX, XX 00000 Fax No.: 000-000-0000 Email address (not for notices): Social Security Number or Taxpayer ID# (if applicable): Jurisdiction of organization (for entities): /s/ Xxxxx Xxxxxx (Signature) By: Xxxxx Xxxxxx Name: Title: Managing Member

SIGNATURE PAGE TO SUBSCRIPTION AGREEMENT. Please acknowledge your acceptance of the foregoing Subscription Agreement by signing and returning a copy to the undersigned whereupon it shall become a binding agreement between us. COMMONWEALTH BIOTECHNOLOGIES INC. a Virginia corporation By: /s/ Xxxx X’Xxxxx Name: Xxxx X’Xxxxx, Ph.D. Title: CEO Dated: December 31, 2007 SUBSCRIBER AGGREGATE PURCHASE 0000 XXXXXXXXX XXXXXXXX PRICE & PRINCIPAL AMOUNT OF NOTE CLASS A WARRANTS CLASS B WARRANTS Name of Subscriber: $ 50,000 25,000 6,250 BRIO CAPITAL SELECT LLC 300,000 150,000 37,500 CHESTNUT RIDGE PARTNERS L.P. Address: 000 X 00XX XXXXXX00 XXXX XXXXXXXXX, XXXXX XXXXX 00XWOODCLIFF LAKE, XXX XXXX, XX 00000 NJ 07677 Fax No.: 000-000-0000 Email address (not for notices): Social Security Number or Taxpayer ID# (if applicable): Jurisdiction of organization (for entities): Delaware, USA /s/ Xxxxx Xxxxxx Xxxxxxx Xxxx (Signature) By: Xxxxx Xxxxxx Xxxxxxx Xxxx Name: Title: Managing MemberChief Financial Officer

SIGNATURE PAGE TO SUBSCRIPTION AGREEMENT. Please acknowledge your acceptance of the foregoing Subscription Agreement by signing and returning a copy to the undersigned whereupon it shall become a binding agreement between us. COMMONWEALTH BIOTECHNOLOGIES INC. a Virginia corporation By: /s/ Xxxx X’Xxxxx Name: Xxxx X’Xxxxx, Ph.D. Title: CEO Dated: December 31, 2007 SUBSCRIBER AGGREGATE PURCHASE PRICE & PRINCIPAL AMOUNT OF NOTE CLASS A WARRANTS CLASS B WARRANTS Name of Subscriber: $ 50,000 25,000 6,250 BRIO 12,500 3,125 ASSAMEKA CAPITAL SELECT LLC Address: 000 X 00XX XXXXXX, XXXXX XXXXX 00X, XXX 00 XXXXXXX XXXX, XX 00000 MONSEY, NY 10952 Fax No.: 000-000-0000 Email address (not for notices): Social Security Number or Taxpayer ID# (if applicable): Jurisdiction of organization (for entities): /s/ Xxxxx Xxxxxx Brand (Signature) By: Xxxxx Xxxxxx Assameka Capital Inc. Name: Xxxxx Brand Title: Managing MemberDirector and President

SIGNATURE PAGE TO SUBSCRIPTION AGREEMENT. Please acknowledge your acceptance of the foregoing Subscription Agreement by signing and returning a copy to the undersigned whereupon it shall become a binding agreement between us. COMMONWEALTH BIOTECHNOLOGIES INC. a Virginia corporation By: /s/ Xxxx X’Xxxxx Name: Xxxx X’Xxxxx, Ph.D. Title: CEO Dated: December 31, 2007 SUBSCRIBER AGGREGATE PURCHASE PRICE & PRINCIPAL AMOUNT OF NOTE CLASS A WARRANTS CLASS B WARRANTS Name of Subscriber: $ 50,000 25,000 6,250 175,000 87,500 21,875 BRIO CAPITAL SELECT LLC L.P. Address: 000 X 00XX XXXXXX, XXXXX XXXXX 00X, XXX XXXX, XX 00000 Fax No.: 000-000-0000 Email address (not for notices): Social Security Number or Taxpayer ID# (if applicable): Jurisdiction of organization (for entities): /s/ Xxxxx Xxxxxx (Signature) By: Xxxxx Xxxxxx Name: Title: Managing MemberManager of General Partner

SIGNATURE PAGE TO SUBSCRIPTION AGREEMENT. Please acknowledge your acceptance of the foregoing Subscription Agreement by signing and returning a copy to the undersigned whereupon it shall become a binding agreement between us. COMMONWEALTH BIOTECHNOLOGIES INC. a Virginia corporation By: /s/ Xxxx X’Xxxxx Name: Xxxx X’Xxxxx, Ph.D. Title: CEO Dated: December 31, 2007 SUBSCRIBER AGGREGATE PURCHASE PRICE & PRINCIPAL AMOUNT OF NOTE CLASS A WARRANTS CLASS B WARRANTS Name of Subscriber: $ 400,000 200,000 50,000 25,000 6,250 BRIO CAPITAL SELECT LLC CENTURION MICROCAP, LP Address: 000 X 00XX XXXXXX0000 XXXXXX X, XXXXX XXXXX 00X, XXX XXXXXXXXXXXX, XX 00000 Fax No.: 000-000-0000 Email address (not for notices): Social Security Number or Taxpayer ID# (if applicable): Jurisdiction of organization (for entities): /s/ Xxxxx Xxxxxx Xxxxxxx Xxxxxxx (Signature) By: Xxxxx Xxxxxx Name: Xxxxxxx Xxxxxxx Title: Managing MemberGeneral Partner