OPTIMIZED SYSTEMS AND SOLUTIONS LIMITED

WACHOVIA BANK, NATIONAL ASSOCIATION

MORTGAGE DEBENTURE

Wachovia Bank, National Association

Fixed and floating charges over the undertaking and all property and assets present and future including goodwill bookdebts uncalled capital buildings fixtures fixed plant and machinery. See the mortgage charge document for full details.

JOHN MOWLEM CONSTRUCTION PLC

RENT DEPOSIT AGREEMENT

John Mowlem Construction PLC

All the company's right title and interest in and to the rent deposit account opened by the lessor with national westminster bank PLC in which the inital deposit is placed and all related rights thereto. See the mortgage charge document for full details.