4Section 20 of the 1965 Act (compensation for short term tenants) shall apply with the modifications necessary to secure that persons with such interests as are mentioned in that section are compensated in a manner corresponding to that in which they would be compensated on a compulsory acquisition of the interests but taking into account only the extent, if any, of such interference with such interests as is actually caused, or likely to be caused, by the exercise of the right in question.