Screening breath tests by police force area, England and Wales, 1997 to 2006( 1)
Police force area
1997
1998
1 999
2000
2001
2002
2003
2004
2005
2006
Avon and Somerset
16,000
19,700
19,200
15,800
15,400
15,100
24,500
27,300
21,900
15,800
Bedfordshire
6,000
5,300
2,900
3,300
4,200
6,200
6,600
7,800
6,700
3,100
Cambridgeshire
19,100
17,800
13,600
12,800
12,700
13,000
12,300
12,300
12,500
12,500
Cheshire
25,500
23,300
20,500
15,800
13,600
12,200
11,900
20,200
22,000
35,700
Cleveland
31,600
34,200
28,600
18,800
14,100
11,000
8,700
8,100
10,800
11,300
Cumbria
11,200
9,400
7,100
6,100
5,100
4,700
5,500
8,400
13,600
13,800
Derbyshire
34,500
35,700
49,200
52,000
42,100
37,900
32,600
31,000
17,700
16,000
Devon and Cornwall
15,200
15,700
14,700
13,000
13,500
12,600
10,900
10,700
10,400
13,600
Dorset
9,100
10,100
9,200
12,300
10,400
10,400
8,500
6,900
7,900
8,700
Durham
4,300
7,400
12,700
15,300
16,300
9,500
7,600
6,100
7,700
6,900
Essex
28,700
28,400
24,100
27,200
18,900
16,100
15,500
25,300
34,200
28,400
Gloucestershire
9,400
9,300
8,300
8,200
9,600
9,300
8,600
7,100
9,100
10,100
Greater Manchester
35,500
31,200
21,500
27,300
23,900
23,200
20,900
19,900
18,900
18,100
Hampshire
25,000
27,300
31,600
35,200
35,200
35,200
37,500
38,400
38,300
34,800
Hertfordshire
7,400
8,100
7,000
6,000
5,500
4,300
4,000
7,300
11,900
12,700
Humberside
6,500
8,300
8,100
9,400
7,500
8,700
6,500
5,600
5,700
10,000
Kent
9,100
27,500
32,700
32,200
32,200
34,200
24,600
32,000
31,200
31,700
Lancashire
21,300
20,300
19,100
15,500
10,000
10,600
8,000
10,200
13,000
16,400
Leicestershire
10,200
20,200
21,100
18,800
14,900
14,500
12,000
15,800
14,400
10,000
Lincolnshire
20,200
25,900
21,000
12,100
13,600
9,000
12,100
11,300
11,400
10,600
London, City of
3,600
3,300
1,700
1,100
1,100
1,400
1,200
700
1,100
1,600
Merseyside
14,800
18,700
18,600
12,800
7,200
7,000
7,700
5,000
8,000
10,600
Metropolitan Police
137,900
111,400
99,800
93,800
65,100
57,200
56,000
61,500
67,500
65,000
Norfolk
9,200
12,400
11,600
9,100
9,100
5,300
4,000
4,800
10,400
7,800
North Yorkshire
10,500
9,900
8,100
6,700
7,400
7,300
8,300
8,600
9,300
10,100
Northamptonshire
7,100
4,700
5,300
5,800
4,500
3,300
3,100
3,200
5,200
4,300
Northumbria
11,900
12,200
12,500
12,700
12,400
11,800
11,100
9,800
9,300
7,900
Nottinghamshire
11,500
8,900
8,400
8,400
7,700
5,800
7,100
8,200
7,900
7,200
South Yorkshire
14,200
12,600
16,100
19,200
18,000
14,400
12,100
6,500
13,700
10,300
Staffordshire
13,800
15,400
10,100
7,700
4,700
5,300
5,100
13,700
14,300
12,700
Suffolk
12,300
15,600
15,100
9,200
8,600
8,900
11,600
10,600
8,900
9,100
Surrey
11,200
11,400
11,700
12,400
13,300
7,500
8,900
9,500
9,600
8,300
Sussex
26,100
17,400
17,900
20,800
21,800
17,300
17,200
15,200
18,000
18,700
Thames Valley
33,100
34,200
30,300
30,800
26,200
25,300
16,000
15,400
14,600
13,500
Warwickshire
8,700
8,700
8,600
7,100
5,800
5,100
5,800
5,500
4,800
4,500
West Mercia
18,300
19,100
12,300
8,900
9,100
8,200
6,300
8,000
8,800
11,300
West Midlands
22,600
24,100
21,300
16,200
12,200
10,500
11,000
6,600
6,900
6,200
West Yorkshire
23,300
22,900
18,800
18,300
17,200
16,700
14,200
16,900
15,400
18,000
Wiltshire
7,400
7,100
6,800
6,500
5,900
5,900
5,900
7,400
7,200
8,700
Dyfed-Powys
8,500
9,200
9,900
7,400
7,000
7,300
6,000
6,700
6,900
7,300
Gwent
12,200
11,200
10,600
10,100
6,400
3,800
2,800
1,600
2,000
1,700
North Wales
13,300
15,200
15,900
15,000
15,100
19,600
17,300
24,200
21,800
19,600
South Wales
23,100
24,900
20,700
17,800
19,300
17,500
16,900
16,700
16,300
17,100
England and Wales(2)
800,300
815,500
764,500
714,800
623,900
570,200
534,300
578,000
607,400
601,600
(1) Following a comparison between the number of positive breath tests reported by each police force in 2006 and the number of court proceedings for drink-driving related offences, it became clear that there was under-reporting in a number of forces. As a result Essex, Humberside, Lancashire, Norfolk, Northumbria, Staffordshire, Dyfed-Powys, Gwent and South Wales court proceedings figures have been substituted for the positive breath test figures. Similar adjustments were also made to various forces data between 1998 and 2005. (2) Figures may not add up to total for England and Wales due to rounding.
