Kinds of compulsory purchase compensation and it's assessment rules in iranian and english law

expropriation (compulsory purchase) can be operated if there is public benefit and compensation is paid. In this essay, first we inquired about kinds of compensation must be paid to whom affected of compulsory purchase in Iranian and English law. in spite of common imagination in Iran compensation is not only the price of land which owner deserved, but includes all direct damages of all beneficiary e.g damages of whom their land or rights was acquired not whom their land only affected of plan without any entry, in Iran and all damages (not only direct damages) of all beneficiary in England. Then we infer rules which govern assessing and recognizing of compensation from Iranian statute. In contrast to English law, in our judicial precedent and doctrine this rules have been neglected and use of them will create a great change in our law and in defensing of private rights against public policies.