There is a TYPO in your request, try:
nslookup -q=ns chenks.co.uk 8.8.8.8
and/or
nslookup -q=ns test.chenks.co.uk 8.8.8.8
Which both return DNS servers from 123-reg.co.uk
There is a TYPO in your request, try:
nslookup -q=ns chenks.co.uk 8.8.8.8
and/or
nslookup -q=ns test.chenks.co.uk 8.8.8.8
Which both return DNS servers from 123-reg.co.uk