(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.
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
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