Yet Another 'Unknown' Photo

Unknown Children, Essex England- 

Upon going through the old family picture box this morning, I discovered this photo.
I have no idea who these children are, but the back of the picture is stamped Evelyn Studios * 36 Aldborough Road * Seven Kings * Essex * Tel. Seven Kings 4856"
Although much of the family originally hails from England, I'm not aware of our family keeping close contact with the British relatives since perhaps 1668.
The photograph is in excellent condition, and of course I'll keep it...
but who the heck are these people?