From left to right across the top are:-

Henry Morley Bigg and his wife Anna, John's sister Amy, Harry Dowell, John Bolton Bigg, Harry's wife Sue, Eliza Eleanor Phillips (aka Lil), Henry William Dowell (Lil's step father), Letitia Dowell, Mary Ann Dowell (née Watson, Lil's mother), and finally, seated on the right, is  Alfred Dowell's fiancée called Frances.

Seated on the steps are John's brothers, namely Harold and Arthur.

The photograph was taken by Alfred Dowell at 15 Darenth Road, Stoke Newington.