The Clustering of Financial Services in London*



Table A2: Characteristics of the Questionnaire Sample

SIC

Description

Freq

Out of

Response
rate %

Data set
composition
%

Whole
sample
composition
%

65121

Banks

37

160

23.1

12.6

11.0

65122

Building societies (Thrifts)

0

5

0.3

6521

Financial leasing__________________________

_____0

_____2

__________0.1

65221

Credit granting

23

106

217

7.8

__________7.3

65222

Factoring________________________________

________1

_____2

50.0

___________0.3

__________0.1

65223

Mortgage finance

0

1

__________0.1

65229

Other credit granting NEC

1

2

50.0

0.3

0.1

65231

Investment trusts

10

55

18.2

___________3.4

3.8

65232

Unit & property unit trusts

6

13

46.2

2.0

0.9

65233

Security dealing

11

62

17.7

___________3.7

__________4.2

65235

Venture & development capital

1

4

25.0

0.3

0.3

6601

Life insurance

39

149

26.2

13.3

10.2

6602

Pension funding

3

6

50.0

1.0

0.4

6603

Non-life insurance

1

6

16.7

0.3

_________0.4

6711

Administration of financial markets

4

20

20.0

1.4

1.4

67121

Fund management

1

3

33.3

___________0.3

__________0.2

67122

Security broking & related

0

4

0.3

6713

Activities auxiliary to financial
intermediation NEC_____________________

5

22

22^7

17

1.5

6720

Activities auxiliary to insurance & pension
funding________________________________

28

143

196

9.5

9.8

7011

Development & selling of real estate

4

21

19.0

1.4

1.4

70201

Letting of conference and exhibition centers

_____4

____30

13.3

____________1.4

__________2.1

70209

Other letting of own property

3

21

14.3

____________1.0

___________1.4

74119

Legal services_____________________________

___59

355

16.6

_________20.1

________24.3

74121

Accounting/auditing

11

71

15.5

___________3.7

__________4.9

74123

Tax consultancy________________________

______9

___59

15.3

____________3.1

__________4.0

7413

Market research

7

29

24.1

___________2.4

2.0

7414

Business consultancy

0

3

__________0.2

74142

Financial management

2

4

50.0

0.7

0.3

74143

General management consultancy

5

24

20.8

____________1.7

___________1.6

74149

Other management consultancy

19

79

24.1

6.5

5.4

Total

294

1461

20.12

_________100

100.0

The extent to which firms in different lines of activity rated the various factors in the
questionnaire differently was tested using a contingency table method. The method
compares the actual number of cases appearing in each cell with the expected count. The
χ2 statistic tests whether the differences between observed and expected counts in each cell
are significantly different to what one would expect. The precise formula is given by:

52



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