@cec

Has he? Well, that's splendid!

[:)]

..uncertainty as to the interpretation of the term "total area"...

Of course there is, this is legislation. You would not want to leave lawyers unemployed, would you?

..the "footprint" will probably not give us the exact size down to the millimetre...

Nope. Actually it will certainly not give us the exact millimetre size. Purely a theoretical exercise. That said - measuring stuff in the flat suggests the estimate is not half bad. Possibly as close as it can get, given the original.

Mind if I pass on the negroni? Please order me a double Laphroaig, no ice (and most certainly no umbrellas), if you see the barman.

@sorrow - there you go - that is what happens when asking questions in a bar... (right place, but the exchange may get sort of silly eventually). Hope the banter can be of some use... Good luck.