From your own link:
'Full Fact is a very well-sourced, thorough fact-checker. We consider them to be a top fact-checker in the genre, with the likes of Politifact and Factcheck.org. MBFC endorses Full Fact as a highly credible fact-checker'
So when they repeatedly call out Camilla Tominney as someone whose comments cannot be trusted we can be assured she is no source to be used in intelligent debate