For the purpose of assessing compensation under this Schedule, in so far as it is payable in respect of the diminution in the value of an interest in land, section 5 of the M1Land Compensation Act 1961, section 12 of the M2Land Compensation (Scotland) Act 1963 or section 2 of the M3Acquisition of Land (Assessment of Compensation) Act 1919 (which contain rules for assessing compensation) shall (according as the land is in England and Wales, Scotland or Northern Ireland), so far as applicable and subject to any necessary modifications, have effect as it has effect for the purpose of assessing compensation for the compulsory acquisition of land.