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Detection Rates

Volume 475: debated on Tuesday 29 April 2008

To ask the Secretary of State for the Home Department what the crime detection rate in (a) each police force and (b) England and Wales was in each year since 1997. (200476)

The information requested is given in the following table.

The non-sanction detections that contribute to the overall detection rate have fallen in recent years reflecting a significant shift by many police forces away from recording detections of crime where no further action is taken. For this reason overall detection rates over time are not fully comparable. From 1 April 2007 the rules governing recording of non-sanction detections were revised to reduce the scope within which they can be claimed to a very limited set of circumstances.

Detection rates for all recorded offences by police force area, 1997 to 2006-07

Police force area

1997

1998-991

1999-20002

2000-01

2001-02

2002-03

2003-04

2004-05

2005-06

2006-07

Avon and Somerset

26

24

22

21

14

15

15

17

23

24

Bedfordshire

35

33

25

27

25

26

23

28

25

22

British Transport Police

n/a

n/a

n/a

n/a

n/a

15

16

17

20

24

Cambridgeshire

27

29

25

24

22

22

23

23

27

25

Cheshire

36

37

31

30

26

26

27

26

27

27

Cleveland

25

23

22

21

20

23

21

24

30

31

Cumbria

40

44

39

34

32

31

32

30

35

36

Derbyshire

25

31

28

26

25

26

25

28

27

26

Devon and Cornwall

32

36

35

34

32

29

29

30

28

27

Dorset

29

31

26

25

27

25

26

28

30

30

Durham

31

33

32

34

33

34

29

29

27

30

Dyfed-Powys

61

69

65

63

64

68

47

43

45

45

Essex

27

29

30

26

26

27

28

27

31

33

Gloucestershire

24

31

31

32

30

29

28

27

32

33

Greater Manchester

20

25

23

22

21

22

22

23

25

25

Gwent

51

55

53

57

55

48

45

42

36

33

Hampshire

30

35

32

29

29

30

27

28

24

23

Hertfordshire

32

34

27

24

24

23

25

29

26

29

Humberside

20

22

19

21

20

20

19

20

23

25

Kent

31

34

33

28

28

28

25

23

26

26

Lancashire

29

34

29

27

26

27

27

30

32

35

Leicestershire

34

34

30

28

28

27

22

25

30

28

Lincolnshire

48

40

28

25

27

23

22

25

26

28

London, City of

26

33

32

27

34

36

33

36

43

39

Merseyside

31

31

26

28

24

25

27

30

28

29

Metropolitan Police

26

22

16

15

14

14

15

21

24

21

Norfolk

37

37

30

26

25

24

26

28

31

30

Northamptonshire

35

33

33

33

31

28

28

29

25

26

Northumbria

26

30

31

31

31

31

30

29

35

40

North Wales

34

43

36

31

28

29

33

42

43

48

North Yorkshire

26

33

31

30

26

26

28

35

35

33

Nottinghamshire

28

25

21

20

18

16

18

20

22

23

South Wales

36

39

31

31

33

29

29

29

26

25

South Yorkshire

29

32

25

25

23

21

24

26

27

26

Staffordshire

35

32

22

23

20

31

33

35

35

35

Suffolk

37

41

36

35

33

34

33

32

30

31

Surrey

33

40

32

28

25

22

22

26

25

30

Sussex

26

25

25

23

25

24

24

25

30

31

Thames Valley

24

25

20

22

24

25

23

26

28

25

Warwickshire

27

26

22

22

25

26

25

27

25

27

West Mercia

28

34

29

28

28

33

31

34

34

34

West Midlands

24

30

27

28

29

26

25

23

26

27

West Yorkshire

27

27

25

23

19

20

20

25

28

29

Wiltshire

32

38

33

29

30

28

28

29

32

26

England and Wales

28

29

25

24

22

24

23

26

27

27

n/a = not available

1 The number of crimes detected in that financial year using the expanded coverage and revised counting rules which came into effect on 1 April 1998.

2 New instructions which clarified the rules for detecting crime were introduced on 1 April 1999.

Note:

It should be noted that non-sanction detections that contribute to the overall detection rate have fallen in recent years reflecting a significant shift by many police forces away from recording detections of crime where no further action is taken. For this reason overall detection rates over time are not fully comparable. From 1 April 2007 the rules governing recording of non-sanction detections were revised to reduce the scope within which they can be claimed to a very limited set of circumstances.