I am interested in some PhD courses which require a 1st class undergraduate degree, which I do not have.
I am in my 30s, and originally took a combined 4 year Master's degree, in a related field to the PhDs. The reason I feel I could be capable of undertaking such a PhD is that during my final (Master's) year I got a good 1st class grade. I did poorly in my second year and very badly in my third year for various reasons which are my own responsibility. I learned from this which is why my 4th year was better, but my grades were too bad to recover completely. I achieved a 2:1 overall. The taught subjects in the final year were generally more advanced versions of the ones in the third year. I got a 1st class grade in my first year.
Is there any possible way to enter these PhDs? Or are they now closed to me permanently? I don't mind a long-term path such as another Master's degree. I would probably not re-take my undergraduate degree at this stage. My career has been reasonably successful. I believe I will be able to publish high-quality peer-reviewed research in a different field (related to my career) if that would help.