“ The proper measure of compensation should be calculated in accordance with section 7(2) of the Party Wall etc. Act 1996, taking into account: (a) all the relevant circumstances; (b) the need, so far as money can, to put the defendant in the same position as it would have been had the damage to its property not occurred; (c) the requirement that the compensation to be awarded should be reasonable, as between the parties; (d) the principle that where remedial expenditure is out of all proportion to the benefit to be obtained, the appropriate measure of damages is not the cost of reinstatement but the diminution in the value of the work occasioned by the breach; (e) the factors, so far as relevant, set out in McGregor on Damages (19th Ed.) at paragraphs 37-003 to 37-013.”