Good to hear that it has been sorted

but you need to put your nameservers in following manner to get your private nameservers registered :-
1st.IP.adrress--ns1.yourdomain.co.uk
2nd.IP.adrress--ns2.yourdomain.co.uk
Ex :-
91.186.0.8--ns1.takewhatyoucan.co.uk
91.186.0.9--ns2.takewhatyoucan.co.uk