On a similar note:

Areas rated by peacefulness
INSTITUTE FOR ECONOMICS AND PEACE: 2012 MAJOR URBAN AREA RANKINGS
Rank
(10 being least peaceful)
Urban area
Homicide
Violent crime
10
Glasgow
2.74
1,759.03
9
London
1.67
1,390.00
8
Belfast
1.75
1,343.28
7
Birmingham
1.53
1,119.05
6
Manchester
1.24
901.16
5
Liverpool
1.76
661.42
4
Leeds
2.07
773.63
3
Nottingham
1.46
794.98
2
Sheffield
1.34
724.98
1
Swansea
0.47
718.6