Go to their website here
- Click on the "registration" icon on the left hand side of the screen
- Enter the institution postcode and click on the "find institution" button
- Select the address if it is there by clicking in the box and then click on the "use selected address" button
- If the address is not there, scroll down the page and click on the "continue" button
- Complete all the mandatory boxes
- Click the "submit" button at the bottom of the page.
You'll then be sent a confirmation email.