1) Actress Sorvino et al 
Stands for Mortgage Interest Relief at Source. This is the way in which tax relief was allowed on mortgage payments. The withdrawal of Miras was announced in the budget, 9th March 1999, by the Chancellor and took effect from April 2000.
Acronym for Mortgage Interest Relief At Source. You receive 10% tax relief on the interest on loans up to £30,000. Payments made to the lender are net of this tax relief.
Mortgage interest relief at source. This was tax relief on your mortgage but was abolished by the government with effect from April 2000.
Acronym for Mortgage Interest Relief At Source. Abolished from 6 April 2000.