The really best chance of acquittal has gone
It was the first case
"My lawyer was crip" appeals were previously not allowed but since a few cases, they can pursued - the bar ( ha!) is really high and the test is - was your lawyer so crip as to make it unjust ?
and there is a rough review here
https://www.kingsleynapley.co.uk/insights/blogs/regulatory-blog/case-update-appeal-on-the-basis-that-counsel-was-so-incompetent-that-the-hearing-was-unjust
As family, you are bound to think that the convict didnt do it and it HAS to be due to crip representation. But he may have done it tho'.
I agree with Chris - neither of us are lawyers and charging for this that you should go back to your original solicitor.
He may say he cant get legal aid for such an appeal - and that therefore you have to pay for it yourself. If it is your own money you have to be pretty careful about how you spend it.
you will have realised by now you cant get much done on Legal Aid.