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Migration

Volume 472: debated on Monday 25 February 2008

To ask the Chancellor of the Exchequer (1) what the international passenger survey estimate of (a) inward migration, (b) outward migration and (c) the net migration balance was in each year since 1978; (177390)

(2) how many (a) inward and (b) outward migrants to and from the UK there were in each 10-year age cohort in each year since 1997.

The information requested falls within the responsibility of the Nationals Statistician, who has been asked to reply.

Letter from Colin Mowl, dated 25 February 2008:

The National Statistician has been asked to reply to your questions on how many (a) inward and (b) outward migrants to and from the UK there were in each year 10-year age cohort in each year since 1997 and what the international passenger survey estimate of (a) inward migration, (b) outward migration and (c) the net migration balance was in each year since 1978. I am replying in her absence. (177389, 177390)

Table 1, attached, gives long-term international migration flows into and out of the UK by 10 year age band for 1997 to 2006 (the latest year available).

Table 2, attached, gives the international passenger survey estimate of long-term inward and outward migration flows and net migration balance, in each year since 1978.

The United Nations recommended definition of a long-term international migrant is someone who changes his or her country of usual residence for a period of at least a year, so that the country of destination effectively becomes the country of usual residence. This is used for calculating population estimates and projections.

These data are from the international passenger survey (IPS), the main source for producing estimates of long-term international migration. Total international migration (TIM) estimates are the most comprehensive estimates of international migration and combine the IPS with other migration flows not captured by the IPS. However, the nature of these other data sources and the methods used to produce TIM mean that some queries can only be answered using the IPS. As a sample survey, data from the IPS are subject to margins of error.

Table 1: International migration flows by ten year age group, estimates from the international passenger survey, time series 1997 to 2006 (calendar year), United Kingdom

thousand

Inflow

All ages

0 to 9

10 to 19

20 to 29

30 to 39

40 to 49

50 to 59

60+

1997

273

25

49

120

45

20

8

7

1998

318

25

41

153

67

20

6

6

1999

354

23

44

171

75

25

10

6

2000

359

20

43

164

82

32

9

9

2001

372

26

37

185

72

27

16

8

2002

386

17

54

191

78

30

7

10

2003

427

25

55

209

82

32

15

9

2004

518

20

57

266

107

36

18

13

2005

496

12

57

269

101

38

12

8

2006

529

32

55

269

107

41

16

9

Outflow

1997

232

22

18

102

51

25

6

9

1998

206

15

16

83

59

16

10

7

1999

245

18

14

118

52

20

14

9

2000

278

16

15

133

63

30

13

8

2001

250

15

15

104

59

36

10

11

2002

305

17

15

124

81

29

26

14

2003

314

21

19

120

82

40

20

13

2004

310

16

17

123

72

36

26

21

2005

328

14

22

129

81

38

18

27

2006

369

22

19

138

94

47

17

33

Notes: 1. The IPS is a continuous voluntary sample survey conducted by the Office for National Statistics. It covers the principal air, sea and Channel Tunnel routes between the UK and countries outside the British Isles. 2. This table relates solely to the international passenger survey (IPS). IPS data forms the major part of international migration. However, total international migration estimates are produced by combining migration data from the IPS, Home Office data on asylum seekers, migration data between the UK and the Irish Republic and adjustments for 'switchers', i.e. those whose initial length of stay intentions are not realised. Source: Office for National Statistics

Table 2: International migration, estimates from the international passenger survey time series 1978 to 2006 (calendar year), United Kingdom

thousand

Inward migration

Outward migration

Net migration

1978

187

192

-5

1979

195

189

+6

1980

173

228

-55

1981

153

232

-79

1982

201

257

-56

1983

202

184

+17

1984

201

164

+37

1985

232

174

+58

1986

250

213

+37

1987

211

209

+2

1988

216

237

-21

1989

250

205

+44

1990

267

231

+36

1991

255

247

+8

1992

207

235

-28

1993

204

223

-19

1994

243

197

+45

1995

235

198

+37

1996

261

223

+37

1997

273

232

40

1998

318

206

113

1999

354

245

109

2000

359

278

82

2001

372

250

122

2002

386

305

+81

2003

427

314

+113

2004

518

310

+208

2005

496

328

+168

2006

529

369

+160

Notes: 1. The IPS is a continuous voluntary sample survey conducted by the Office for National Statistics. It covers the principal air, sea and Channel Tunnel routes between the UK and countries outside the British Isles. 2. This table relates solely to the international passenger survey (IPS). IPS data forms the major part of international migration. However, total international migration estimates are produced by combining migration data from the IPS, Home Office data on asylum seekers, migration data between the UK and the Irish Republic and adjustments for 'switchers', i.e. those whose initial length of stay intentions are not realised. Source: Office for National Statistics