There is an Edward MALLOS on the 1871 English census, born abt 1868 TURNHAM GREEN, MIDDLESEX LONDON.
He is living with his family in WATFORD, HERTFORDSHIRE. Father is listed as Charles MALLOS labourer aged 26 birth year abt 1845 place Be NORFOLK. Mother as Julia born abt 1846 TURNHAM GREEN, MIDDLESEX LONDON.
Siblings are Henry MALLOS who appears to be a twin, also born 1868 TURNHAM GREEN, MIDDLESEX LONDON and Mary Anne MALLOS born abt 1871 TURNHAM GREEN, MIDDLESEX.
Does this sound like your Edward?