The Aimhigher portal helps prospective HE students to make the right choice by providing information about HE institutions and courses, careers guidance, and advice on student finance. Sadly it is relates only to England at the moment but it is hoping to become a UK-wide service.
Biz/ed is an excellent source of economics and business related learning materials, data sets, company info. and simulations. The Virtual Worlds section includes the Virtual Economy - an online model of the economy based on the Treasury model - and the Virtual Developing Country where you can take a series of economics-related virtual field trips throughout Zambia.
EducationGuardian.co.uk's interactive guide to universities and colleges is the most comprehensive source of information on the UK's academic sector, covering some 100,000 calculations on 150 universities and colleges. Last year's guide to economics is available.
This is an index of career advice from the Guardian. Choose an article to match your personal career priorities. The site also has a very swish database of jobs.
The Studying section of the Higher Education & Research Opportunities in the UK (HERO) Web site has guidance on almost every aspect of student life from applying to a university to study skills.
UCAS is the central organisation that processes applications for full-time undergraduate courses at UK universities and colleges. On the site you can find information on available courses and you can take the Stamford Test which matches your interests, aptitudes and career ideas to the most suitable HE subject.
You can access an updated list of university economics departments, with course and staff lists where available. If you're specifically looking for open days, check the list on this site.
Opendays.com is a free online directory of institutional open days. You can search by institution and region, see a calendar view of all available events and get some helpful tips and advice.
There are two excellent interactive maps that allow you to visualise the spread of higher education institutions across the UK and access the home pages of each institution. They are provided by HERO (Higher Education and Research Opportunities in the UK) and the University of Wolverhampton.