Current impairment and insight
The central question is whether fitness to practise is impaired now. Decision-makers look at present risk, the likelihood of recurrence, current competence and conduct, time elapsed, evidence of changed practice, public confidence and professional standards.
Insight is not saying sorry. In a GOC case it means showing that you understand what happened, your responsibility, the impact on patients and trust, which standards were engaged, the future risk, and the safeguards you have put in place, and that you have applied that learning.
Disputing facts does not automatically prevent insight. You can contest what happened while showing you understand why the alleged conduct would matter. Take advice before making statements about disputed facts.