IRS Ltd has been supplying signs to the
Royal Estates for more than 30 years.

In 1981 Martin Dupont became a grantee
to HM the Queen for the supply of signs
and notices on the recommendation of
the agent Sir Julian Loyd.

In 1987, with Martin taking a less active
part in the company, Ian Dupont became
the grantee,looking after both the Balmoral
and Sandringham estates.