In uk.d-i-y, John Cartmell wrote:
I know of someone getting a ticket for 32mph in a 30mph limit.

Is it possible that he was doing something else wrong? From ACPO's
guidelines:

The guidance to police officers is that it is anticipated that,
other than in the most exceptional circumstances, the issue of
fixed penalty notices and summonses is likely to be the minimum
appropriate enforcement action as soon as the following speeds have
been reached:

Limit Fixed Penalty Summons
20 mph 25 mph 35 mph
30 mph 35 mph 50 mph
40 mph 46 mph 66 mph
50 mph 57 mph 76 mph
60 mph 68 mph 86 mph
70 mph 79 mph 96 mph

This guidance does not and cannot replace the police officer's
discretion and they may decide to issue a summons or a fixed
penalty notice in respect of offences committed at speeds lower
than those set out in the table. Moreover, in particular
circumstances, driving at speeds lower than the legal limit may
result in prosecution for other offences, for example dangerous
driving or driving without due care and attention when the speed is
inappropriate and inherently unsafe.

http://www.acpo.police.uk/asp/polici...ment_guideline
s_web_v7_foi.doc

--
Mike Barnes