Boardman's birthday party ideas is a US site with loads of ideas for children's theme parties.
Babycentre - Masses of information on everything about pregnancy, birth and the first five years of life with a baby. Includes useful discussion forums.
Family Information Service - A service provided by Westminster which provides useful information to parents and carers of children and young people especially on childcare.
Family Lives - A parenting charity website offering "Advice and support for mum, dad and professionals" has articles, forums and many useful means of communication for a variety of important subjects.

Marriages and Civil Partnerships - Government site giving information on the legal and other requirements for these ceremonies.
Relate - Website of the relationship advice & counselling service, including links to other organisations.
Planning a Wedding - Marriage-related articles from Brides Magazine.
Divorce-Online - A commercial service with useful free advice on self-help and sources of professional help for people contemplating divorce.
Tracing Missing Persons - Helpful advice about tracing missing people.

AgeUK (formerly Age Concern and help the aged) - Site packed with information for and about older people giving helpful advice on a variety of subjects.
Silver Surfers - Website portal for the over-50s.
GOV.UK : Pensions - Information about pensions from the government regarding both State and workplace pensions.

Personal finance from KnowUK
Gov.uk: tax and benefits information - Provides information on a variety of issues in personal finance such as tax (e.g. Council Tax and Income Tax), National Insurance, benefits, debt, pensions, savings and investments.
HM Revenue & Customs - Formerly the Inland Revenue. Provides information on tax and National Insurance. IR leaflets and booklets are available for printing.
MoneyFacts - Information, comparison charts and news from the long-established publication.
Money Expert - Well-respected guides to key aspects of personal finance from the publishers of Blay's guides.
Money Advice Service - Officially sponsored independent service offering clear guidance on all matters related to personal finance.
MoneySavingExpert.com - Consumer advice including mortgages, cheap travel and shopping tips.