It is Corless, it is what's known as the long S.
It is possible that it is St.Giles Church Cripplegate Fore Street EC2, this is behind London Wall near to the Museum of London. It would be about a mile and a half from Bethnal Green, but this would depend on which part of Bethnal Green you are looking for?
You can type in St.Giles London on Google and read about the church and its history.