Sorry, the records don't go into that much detail. They simply list the serial number, who the rifle was despatched too and the date it was despatched.
There is no record of a Christian name for Mr Illsley, I would suggest you contact the Firearms Licensing Dept at Liverpool http://www.merseyside.police.uk/html...arms/index.htm and tell them about your research and that you are looking for a Mr Illsley. If he was either a Registered Firearms Dealer or Firearms Certificate holder in Liverpool there's a good chance they'll have records of him.
Cheers,
Simon.