Security move?

Sir,

In Brighton, last week, we saw a G.P.O. Mail Van whose “winkers” operate diagonally, i.e., off-side front with near-side rear.

Have any other readers seen this amusing (but irresponsible) phenomenon?

C.B. Purvis.
Sunderland.

[This could be a new security precaution! Incidentally, perhaps with a £2,600,000 robbery to occupy them the police will find something better to do than lying in wait for cars doing 52 m.p.h. down dual-carriageways these summer week-ends.—Ed.]