DWF, which has 500 staff at its Spinningfields office in Manchester is hoping to become carbon neutral by 2013.
National law firm Cobbetts has reduced its carbon emissions by 30% in the last 3 years.
Abney Garsden McDonald Solicitors has saved 65 Trees after becoming a paperless office largely thanks to better technology and an improved IT and case management system.
National legal recruiters, Executive Network Legal (eNL) have planted in excess of 30 trees in the last two years with a further 20 planned for 2011.