ACAS
http://www.acas.org.uk
Features online versions of a variety of advice leaflets and "getting it right" guides on topics such as lay-offs, short time working, varying contracts of employment, discipline at work and so on.

Acts of Parliament
http://www.hmso.gov.uk/acts.htm
Only recommended for real legal eagles.

Age Positive
http://www.agepositive.gov.uk
Government website intended to provide practical help for employers and staff on ending age discrimination at work. Contains a wealth of useful information intended to encourage age diversity following the introduction of new laws in 2006, which made age discrimination illegal.

BERR Redundancy Payments: Ready Reckoner
http://www.berr.gov.uk/employment/employment-legislation/employment-guidance/page33157.html
Enter your age, years of service and wage and find out how much statutory redundancy pay you would be due.

Court Service
http://www.courtservice.gov.uk
The offical Court Service web site includes includes news, daily court listings, judgments, forms and leaflets.

Employment Appeal Tribunal
http://www.employmentappeals.gov.uk
Contains information, judgements, forms.

European Court of Justice
http://www.europa.eu.int/cj/en/index.htm
European Court of Justice website - handy if you ever end up there.

Public Concern at Work
http://www.pcaw.co.uk
Promotes accountability and good practice in the workplace. "We do this by helping ensure concerns about serious malpractice are properly raised and addressed before the public interest is harmed."

Stammeringlaw
http://www.stammeringlaw.org.uk/
A website that looks mainly at how the United Kingdom's Disability Discrimination Act 1995 (the DDA) applies to people who stammer.