Welcome to CIDER - the Centre for Interaction Data Estimation and Research. Part of the ESRC funded Census of Population Programme, CIDER is a Data Support Unit with the specific remit of providing access to and supporting interaction data sets produced from UK Censuses of Population. Census interaction data are data that relate to flows of people between places. Whereas most Census data relate to counts of people at specific locations, interaction data describe interactions between origins and destinations.

CIDER was previously known as the Census Interaction Data Service (CIDS), under the 2001-2006 ESRC/JISC programme funding round.

CIDER is the home of WICID - the Web-based Interface to Census Interaction Data, which provides access to our datasets.

News

 New time series of inter-regional and inter-county migration estimates now online 2010-02-12

The first in a series of new data sets from the ESRC-funded Combining Migration Data in England and Wales project is now available to access from . The project, recently completed by James Raymer, Peter Smith and Corrado Giulietti at the Southampton Statistical Sciences Research Institute (S3RI), has produced several datasets at regional, county and ONS local authority classification Group levels, which cross tabulate age, sex, ethnicity and employment status variables. These data are available for time series ranging from 1991 to 2007.

For detailed information on the datasets and methodology used to produce the estimates, a PowerPoint presentation given by James can be accessed here and the final project report can be accessed here.

 New CIDER Migration Classification Geography Available 2009-12-16

A geodemographic district level classification based upon migration variables is now available as a new geography in . The classification has been developed by CIDER as a new framework for analysing migration flows. For full details, read the associated working paper here.

Getting the data

There are three ways of getting to the data. In order to use most of the data sets, it is necessary to be registered.

  • - the flexible query builder
  • Off the shelf - a library of prepared data sets
  • Flow summaries - a quick summary of the most significant flows associated with a chosen area

About the data

Currently migration and commuting data from the 1981, 1991 and 2001 Censuses are available through WICID. Soon additional non-census datasets will also be available from the system.

New Interaction Data Training Available

CIDER is now able to offer customised training on any aspect of the WICID interface or offer expertise and guidance on using interaction data.

Click HERE for more information.