Silvia Lawson Johnston née Roigt (born 1940) is the founder of the first short term housing rental agency in London, England, where she has lived since 1959.
The daughter of author, journalist and Argentine diplomat Don Honorio Roigt, on moving to Great Britain she married the fine art dealer Arthur Charles St John Lawson Johnston, later Lord Luke.
She was educated at the International School of Geneva (Ecolint) and came to England in 1959 to be married to the Hon Arthur Charles St John Lawson Johnston.
In 1980 she joined Brian D'Arcy-Clark and Owen Inskip, the founders of Chesterfields Estate Agents in Chelsea.
In 1984 Silvia co founded People and Property, a relocation service specializing in the field of international banking.