The Library Catalogue is getting an upgrade next week. There'll be a period when only the Aquabrowser interface is available and when the catalogue's information is a little out of whack with the situation on the shelves.
It is expected that self-renewals on the library catalogue won't be possible midday Monday 27th July until the evening of Wednesday 29th July. The best idea would be to renew now, otherwise contact library staff.
More information on the library news pages