The information requested falls within the responsibility of the UK Statistics Authority. I have asked the Authority to reply.
Letter from Karen Dunnell, dated April 2008:
As National Statistician I have been asked to reply to your recent question asking when estimates for short-term migration will be published for each local authority area. (199304)
An initial report on the outcome of work to explore the feasibility of producing such estimates is planned for late 2008. If this concludes that a suitable methodology can be developed using existing sources, which is at this point still uncertain, it is anticipated that estimates for short-term migration for local authorities could be published in 2009.