British Chamber of Commerce
http://www.chamberonline.co.uk/ 

Companies House
http://www.companies-house.gov.uk/

Confederation of Business Industry
http://www.cbi.org.uk/

Federation of Small Businesses
http://www.fsb.org.uk/

Prince's Trust
http://www.princes-trust.org.uk/

Patent Office
http://www.patent.gov.uk/

British Franchise Association
http://www.british-franchise.org.uk/

HM Government Small Business Service Business Link
http://www.businesslink.org/

Small business advise from government
http://www.businesslink.gov.uk/

HM Government Dept of Trade & Industry
http://www.dti.gov.uk/

Trade Partners
http://www.uktradeinvest.gov.uk/

Bank of England
http//www.bankofengland.co.uk

HM Revenue & Customs 

http://www.hmrc.gov.uk/