How's that 'guns banned and cameras on every corner' thing working?

Not too damned well.
The Tories have found that in Harlem last year there were just 5.9 robberies per 1,000 residents.

Across London the figure was 7.4 attacks.

In some inner-city boroughs the level of street crime was even higher.

Lambeth, which includes Brixton, saw 24 muggings per 1,000 people - four times the Harlem rate.

Westminster - which includes Downing Street and Buckingham Palace - had 12 robberies per 1,000 residents.

The borough of Islington, where Tony Blair lived before becoming Prime Minister, saw 9.3 attacks per 1,000.

Shadow Home Secretary Oliver Letwin said last night: 'You are now more likely to be robbed in London than you are in New York's Harlem.

'These latest figures validate the fears and concerns of London residents.'

Also found this from Mr. Goddard:
According to the FBI, there were 1.2 million violent crimes committed in the US during 2011.  FBI — Violent Crime
According to the UK government, there were 1.94 million violent crimes in the UK during 2011.  www.ons.gov.uk/ons/dcp171778_296191.pdf
There are almost exactly five times as many people in the US as in the UK – 314 million vs. 63 million. The violent crime rate in the UK is 3,100 per 100,000, and in the US it is 380 per 100,000 population.
Brits are eight times more likely to be victims of violent crime than Americans. For some reason, Piers Morgan doesn’t talk about this.
Damn right he doesn't; it doesn't advance his preferences.