At first glance I´d say Gill Sans is used for metropolitan police

Now that is one very bitmapped sample.

The logo looks something like Gill Sans or Lucida Sans (shows how difficult it is to recognise the faces), while I'm quite positive the baseline is set in Univers Condensed.

nevermind... the R is completely different...

Thanks everyone.

I'll see if Gill or Lucida work!

Much clearer version available on their annual report here:
http://www.met.police.uk/annualreport/pdfs/mpa_mps_2004_05.pdf

I've got a feeling that this is a customised sans. I think Wolff Olins may well have done the brand...? See this report from 1997:
http://www.morrisinquiry.gov.uk/downloads/evidence-inq-103.pdf

Also on Wally Olins own biog website:
http://wallyolins.com/biog.htm#

I think Yves is right: Tagline is a condensed version of Univers (not sure which weight without checking) but I have a feeling you want to know the Metropolitan Police font.

The stresses are oblique (see M and N). Notably, the P's are different top and bottom. Bottom P looks Myriad-ish but the rest isn't Myriad. I don't think I have ever seen an R with a tail like that.