bessy on Family Tree Circles

In the early 1900's My mothers family and grandparents lived at 5 Gerard Street, Islington, London.
This was Dennis and Elizabeth (nee Long) Jackson's family, There were at least 10 children in the family, of which one was my grandfather. My mother emigrated to New Zealand in 1949 and so I have only sketchy information about this family tree. I am 59 this year and I know I have cousins in the UK but have only been in contact with three of them, and only recently, my cousins would be in their 50's and 60's. I would love to find out more about my family tree.