There will be a choir of 200 children from Cornwall joining with thousands of others around the country in a massive choral performance of Avril Lavigne's Keep Holding On led by BBC 2 choirmaster Gareth Malone at Television Centre in London.

BBC: Children in Need 2011 in Cornwall

Keep a keen eye on trusts, family-limited partnerships, holding companies and even the seemingly benign charitable foundation.

FORBES: Uncovering Hidden Assets