An investment trust is a public limited company (PLC) traded on the London Stock Exchange, so investors buy and sell from the market. It invests in other companies, seeking to generate profit for its shareholders.
Essentially, your money is pooled with contributions from many other people, and used to buy a portfolio of investments. Just like other types of investment funds.
But investment trusts are unique - after all, they've been around for over 150 years, that's a lot longer than other investments - chosen and managed by an expert team, giving you access to a much wider and more diversified portfolio.
The value of your investments may go down as well as up and you may not get back what you invest.