ID my Bonsai please

Hi All I have this one Bonsaid from when I had a collection I grew back in 1992 to 2006 I went to Borneo for 8-9 years and came back in 2015  Only to find all but one was alive. As My mum passed away and could not look after them and my father not liking plans just his trans could not be bothered to water them. or cover them. I was silly to have sold my home back then as I live in a terrible place in shared accommodation. But as I work in a care home. I started up Bonsai again as an activity. So I show how they are grown and looked after. 

This tree was the only one left and I cannot remember it to be Honest As it had grown. So it became in my care, Every season I wanted to re-pot it. tried to grow others that I bought.

nothing seems to take on like this one. Being a conifer I assume it is. But what kind?

As it seems, unlike others I have seen in garden centers. Other leaves seem flat, this seems more bushy.

Can you ID this for me please?