But don't panic, the catalogues currently available on A2A (from many different record repositories in the UK) are going to be merged into The National Archives' catalogue, Discovery. A beta version of the new-style Discovery can be tried out here: http://beta.discovery.nationalarchives.gov.uk/ To search for records from a particular repository, you have to go into Advanced Search and click on 'Search other archives'. A box then appears for you to type in the name of the repository.
Thanks for that Jane. I knew they were going to merge A2A with Discovery at some stage, but not when. I see they are saying by Autumn 2014, it will make things a bit long-winded, but, like everything in this world, we'll just have to get used to it...... Ann