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: $ 400,000 200,000 50,000 CENTURION MICROCAP, LP Address: 0000 XXXXXX X, XXXXXXXX, 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/ Xxxxxxx Xxxxxxx (Signature) By: Name: Xxxxxxx Xxxxxxx Title: 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 CENTURION MICROCAP, LP 175,000 87,500 21,875 BRIO CAPITAL L.P. Address: 0000 XXXXXX X000 X 00XX XXXXXX, XXXXXXXXXXXXX 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/ Xxxxxxx Xxxxxxx Xxxxx Xxxxxx (Signature) By: Xxxxx Xxxxxx Name: Xxxxxxx Xxxxxxx Title: Manager 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 0000 XXXXXXXXX XXXXXXXX PRICE & PRINCIPAL AMOUNT OF NOTE CLASS A WARRANTS CLASS B WARRANTS Name of Subscriber: $ 400,000 200,000 50,000 CENTURION MICROCAP, LP 300,000 150,000 37,500 CHESTNUT RIDGE PARTNERS L.P. Address: 0000 XXXXXX X00 XXXX XXXXXXXXX, XXXXXXXXWOODCLIFF LAKE, 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/ Xxxxxxx Xxxxxxx Xxxx (Signature) By: Xxxxxxx Xxxx Name: Xxxxxxx Xxxxxxx Title: General PartnerChief 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: $ 400,000 200,000 50,000 CENTURION MICROCAP, LP 25,000 12,500 3,125 ASSAMEKA CAPITAL Address: 0000 XXXXXX X00 XXXXXXX XXXX, XXXXXXXXMONSEY, XX 00000 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/ Xxxxxxx Xxxxxxx Xxxxx Brand (Signature) By: Assameka Capital Inc. Name: Xxxxxxx Xxxxxxx Xxxxx Brand Title: General PartnerDirector 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: $ 400,000 200,000 50,000 CENTURION MICROCAP, LP 25,000 6,250 BRIO CAPITAL SELECT LLC Address: 0000 XXXXXX X000 X 00XX XXXXXX, XXXXXXXXXXXXX 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/ Xxxxxxx Xxxxxxx Xxxxx Xxxxxx (Signature) By: Xxxxx Xxxxxx Name: Xxxxxxx Xxxxxxx Title: General PartnerManaging Member