The Warrens of Kent , UK

I have been researching my family tree back to the early 1800's for a couple of years. Unfortnately I cannot travel to Kent from Derbyshire where I live so have been forced to use the GRO records available locally.
I am researching the Warren family in Greenwich, Spains of Folkestone and Deptford, and Warmans of Folkestone. I am particularly interested in my paternal grandmothers family the Conolly from Cork, Eire as I cannot find them before 1900.