A corporate action happens when something in a company changes that might affect its shareholders and/or its share price. As a shareholder, you have the right to know about this change. For some corporate actions, you can vote on it too.
If a corporate action happens on any of your investments, you’ll be sent all the details about it and what you need to do (if anything).
There’s usually no charge for a corporate action. But if it involves converting a foreign currency to £, there’ll be a foreign exchange charge of 0.5% of the value.