The Big Bus is available on subscription at £90 per nursery school, or £269 per primary school, per annum ( inc VAT ) or try it for the first 28 days and remember to cancel the subscription. ( Free demo CD on application.).
The site has a number of useful activities supporting ages from 3-11.

downloadable letter sounds and activities.

The Under 5s Education website is a general site with links to other pages with content suitable for under 5's.

Cbeebies is a useful site for songs to sing, games, storybooks and printables etc. suitable for younger children.

The Hitentertainment.com site also links to other children's tv related sites such as Barney, Pingu and Art Attack.

The Fun School site has activities from pre-school upwards, games with educational value.

Billybear4kids.com has online animated storybooks but a grownup will need to read them to tinies and free downloadables

Primary Games - Maths games, literacy activities such as contractions, word search, spelling-long vowels, short vowels, blends, digraphs etc., and storybooks.

abcteach.com has basic activities for supporting reading, writing, maths, comprehension, activities based on themes such as Animals, Habitats etc and Fun things such as crossword puzzles, word searches, number puzzles etc.

Clifford, the big red dog, Interactive Storybooks and games.

The Learning and Teaching Scotland Early Years pages have great links for early years from this site.

Starfall.com is a free site to help teach reading, interactive books and phonics games