So despite Mr Parsons' protestations, the best and quickest way with least hassle to secure a tax refund is to submit a tax return................before 28/02/21 to avoid a penalty!!!!!!!!!!!!!!!

Once again, to rebut the false claims being made.
If you are taxed by PAYE, on income from work and/or pensions, and you do not meet the requirements to have to submit a self-assessment return, a refund can be requested online/over the phone.
Ignore any warning about a 'penalty', no matter how many exclamation marks it carries.
You cannot be penalised for being late with a return which you are not required to submit.