Loans will be renewed automatically, although you can also renew them via 'My Account', at the service desks, or using the self-service machines.
Items, IT equipment, hourly loans and group study rooms cannot be renewed, so you will need to return them when the loan period ends.
Your books will be renewed automatically, provided that:

To find out which items can be renewed, please check the loan conditions.
Please return the books when you no longer need them.
PLEASE NOTE: once the renewal limit has been reached, you may request to borrow the returned item again, provided the loan period has not expired and no other user has reserved it. You can request this at any US library counter by presenting the book in person. The final return must be made at the same counter where the book was first borrowed or at the counter of the library that owns the copy.