DRY cleaners Prescotts is to sell the leases of its premises in Stillorgan and Dundrum shopping centres to concentrate on its eight branches in north Dublin.Stillorgan shop, which has a floor area of 1,200 square feet. The premises is held under a 42-year lease from 1966 with seven-yearly rent reviews. The rent is Pounds 52,000, and the service charge is fixed until 2001. In Dundrum, a premium of Pounds 45,000 is being sought for the premises which has 750 square feet. Rent reviews are at seven-year intervals and the rent stands at Pounds 23,400.