UK!!! Am I able to request my full medical record?

So I have Brittle Asthma Type II and since my last major asthma attack in 2010 I have suffered scarring of the lungs.

Anyway over the past few years I have been with an awful GP who has denied I suffer with Brittle Asthma Type II, despite me being diagnosed as a kid and I'm sure all he has to do is access a file to see that on my record.

Also for the past few years I have been suffering with a very bad cough which regardless of treatment has not gone away which I have just recently found out is a common symptom of scaring of the lungs AKA IDF.

It has become quite clear to me my GP has not been accessing my medical records and just been acting off discussion and although I remember the odd details of my medical history, I don't know it all. Also when I told him I had Brittle Asthma Type II he dismissed it saying my asthma is just badly managed.

I have now changed GPs but in case I encounter the same issues, I'm wanting to request access to my medical records.

I know the IPF was diagnosed in 2010 during an asthma attack so that part is easy to get hold of.

The issue is all I know about my asthma diagnosis is that I was very young, even my Mum doesn't know the rough year.

I'm just wondering can I request full access to my medical record. Like the entire thing from birth to the present day.

Just be nice to have that access though as then if my new GP proves as unhelpful I have the bit of paper that says otherwise.

Can I access my full medical record?