BLUE TONGUE SKINKS

Hi everyone I'm new to the group and new to blue tongues. I'm gonna post a question that I know drive people mad. The old what type is my blue. I brought him from a reptile shop in the UK. I found it so difficult to find one here. Took my month's of searching. Now I do t really care what type he is I just want to give him the best care. I did question the people in the shop as he did not match the pictures of northerns that I have seen. I got there backs up a little when I did this. They assured me that it was a northern a d that they can vary. So guys here is my skink and what do you think he is. Also any idea on age. The shop wasn't sure. Thank you for any help. Pa he is shedding

No pictures were attached

Have another go at uploading pictures? BUT, the chances of finding Northerns in a reptile shop in the UK are rather low to non-existent I have to say. Unfortunately most shops are not clued up at all when it comes to blue tongues.