WooCommerce Checkout - Missing Button

Hey all,

My clients website (still in staging/preview mode) has an issue at checkout:

When you add an item to basket (if anyone needs to try, there's a free item here http://chiromarket.co.uk.gridhosted.co.uk/product/free-guide-marketing-plan/) and proceed to the checkout, there's no button to complete the order or the registration after filling out your address details.

The site has Paypal on, I do wonder if this is something to do with the issue but probably not.

Any ideas?