In message , at 21:57:56 on Thu, 18
Apr 2013, jaychiu remarked:
Anyone knows typically how long does it take for the MPS
to issue such a letter?

If it's anything like the normal response to paperwork I'd allow at
least three weeks.

or would it be feasible for me to drive down to
London to request and then collect the letter on the same day?

The problem with that is knowing which bit of the MPS to visit, they
have numerous buildings. And then you'd have to in effect make an
appointment with the person issuing the letter, for them to hand it
over. Expecting to do all that on the same day is extremely ambitious.
--
Roland Perry