The following links may be of use to you.  

Professional bodies
 
ACCA  Association of Chartered Certified Accountants www.uk.accaglobal.com
ICAS Institute of Chartered Accountants of Scotland www.icas.org.uk
ICAEW Institute of Chartered Accountants in England & Wales www.icaew.co.uk
IPSE The Association of Independent Professionals and the Self Employed www.ipse.co.uk
CIOT Chartered Institute of Taxation www.tax.org.uk
CIMA Chartered Institute of Management Accountants www.cimaglobal.com
ATT Association of Taxation Technicians www.att.org.uk
AAT Association of Accounting Technicians www.aat.org.uk
FSB Federation of Small Businesses www.fsb.org.uk

Regulatory bodies
 
HM Revenue and Customs www.hmrc.gov.uk
FCA Financial Conduct Authority www.fca.org.uk
    
Industry interest
 
UK200Group www.uk200group.co.uk
AVN www.avn.co.uk
JSA www.jsagroup.co.uk
LexisNexis  www.lexisnexis.co.uk
CharterGroup www.chartergroup.co.uk
Financial Times online www.ft.com
Accountancy Age www.accountancyage.com 
Accountancy www.accountancymagazine.com
AccountingWEB www.accountingweb.co.uk
Insurance Times www.insurancetimes.co.uk
Premium Credit www.premium-credit.co.uk