Hello Karen,
There's no obvious sign of Charles in 1901; the 1891 shows him as born 1855 Clifton, Bedfordshire, living in Hendon, Middlesex. An Esther Copperwaite aged 48 born Suffolk (consistent with the details from 1891, when she gives her birthplace as Mildenhall, Suffolk) is in service in Willesden, Middlesex - married, but no sign of her husband.
Anna