It looks like it's because your name servers are set to:
That means the world is looking to those two servers to get DNS records - so you can make what ever DNS records you want on your server but it won't makee any difference if everyone else is looking to those two name servers for the records.
Have you made name server records for your server to use?
On your registrar's control panel make ns records for ns1.yourserver.com and ns2.yourserver.com.
Then again on the registrar;s control panel change the name servers for jsearched.co.uk to the two records you just made previously.
Leave it to propogate and hopefully problem solved.