Note. Gowers also wrote under this heading: 'About the age- long conflict between it is I and it is me, no more need be said than that, in the present stage of the battle, most people would think "it is I" pedantic in talk and "it is me" improper in writing'. Now, however, most people would find 'it is I' disquietingly fey in any modern context, written or not. By contrast, the grammatically needless use of myself is flourishing. The Deputy Prime Minister, for one, clearly believes that myself confers a certain something that I and me both lack: 'Myself and the Prime Minister are saying exactly the same thing'; 'There is not a cigarette paper between myself and the Prime Minister on this issue', 'But all of us in this government, including the Prime Minister and myself, are not willing to compromise ...' etc. ~
'There is not a cigarette paper between myself and the Prime Minister on this issue.'
Metaphorically: the differences between the writer and the Prime Minister are virtually nil ... only the thinnest of paper (in this case a cigarette paper) could come between their positions on X.