The Home Office said this was a "long standing" agreement - but stressed Brazilian nationals entering the UK for other purposes, such as work or study, must ensure that they have the appropriate visa.
Apart from the many questions about Tuesday's agreement that remain unanswered, it will have no standing until ratified by Iran's Supreme National Security Council.
It's on a motion calling for a rapid agreement between the government and the insurance industry, to renew the long-standing deal under which the industry insures homes in areas at risk of flooding, in return for a government commitment to spending on flood defences.