Mature Student: GDL or Senior/Graduate two year LLB?

I have an integrated MSc degree in Biological Sciences (2011) from overseas, for which I have NARIC equivalency certificate. It is not an undergraduate degree and I do not have a separate undergrad, but if I convert my grades, it will equal to a UK first honours.

I have also done a Masters in Social Anthropology at LSE, 2013. I finished it with merit. I started this degree when I had just had a baby, and it was not an easy thing to manage. I got a distinction for my dissertation, but not overall. Since then I have been mostly a stay at home mum, as the family circumstances and internationals moves would not allow other things.

With these qualifications, if I do a GDL, will I have a chance for BAR/Pupillage here? Academically, I have always been at the top, but my undergrad degree is not from here, and apparently that is the main thing the employers look at.

I have considered the Graduate entry LLB as it can give me a fresh recently out of Uni advantage, however, I do not know if it is worth the extra cost and time.

If anyone has any relevant experience I am looking forward to hearing your suggestions!

Where is it from?
I would do the senior status degree.

My first degree is from the University of Tehran in Iran. It is the top-ranking university there but I guess I would not be able to send that message across easily here.