CGT
Ishmaels CGT calculator on the main menu of this site provides a reasonable estimate of CGT payable, however clarity will be required regarding any enhancement expenditure, acquisition and disposal costs in relation to the property and also detail of any periods of owner occupation, a market valuation for the property at 6th April 1974 will also be required.
It is essential to contact a professional ( accountant or tax advisor ) prior to submitting any assessment / detail to the inspector of taxes.