Apex domains cannot have CNAME records.
Question and response
Question
dig wgcollege.co.uk. NS
Answer
wgcollege.co.uk. 5 NS ns2.bluehost.com.
wgcollege.co.uk. 5 NS ns1.bluehost.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0