2011 Census Flow data in SASPAC

04/02/2016

All 2011 Origin/Destination Census flow tables have been released by ONS and are available through a small software update.

In total there are 147 ‘Public’ and ‘Safeguarded’ flow tables available for users to access through SASPAC on their desktop.

Public SASPAC System files are downloadable from here.

Safeguarded System files may be downloaded from the UK Data Service website but require users’ to agree to additional t&cs via a ‘Safeguarded licence’ provided by the UK Data Archive  – see here (.pdf) for guidance on how to do this.

A release note with update instructions can be found here, whilst the latest SASPAC System files can be found here. Please contact the helpdesk if you have any issues with this update.


Flow data & SASPAC

28/01/2015

2011 Census Safeguarded flow datasets have begun to be released by ONS and are now available in SASPAC. Currently 15 tables have been published via the UK Data Service, with further tables expected throughout Feb/March. Tables currently available include data on:

  • Output Area to Workplace zone flow counts
  • MSOA/Intermediate zone worker flows by age, sex and mode of travel
  • Output Area to Output Area migrant flow counts
  • ward to ward migrants flows by age groups and sex

A list of tables currently published is here (.xls).

Flow datasets are available under three levels of licence: Public, Safeguarded and Secure:

  1. Public – open and accessible like any other Census data (downloadable in SASPAC from here)
  2. Safeguarded – available to public sector and academic users to download in a SASPAC format from the UK Data Service – requires users to sign up to additional t&cs.
  3. Secure – available within the ONS Virtual Microdata Laboratory (VML) to Approved Researchers for specific projects – SASPAC is available in this environment.

Instructions on how to access the SASPAC data via these channels is explained in the attached guidance note (.pdf) along with important information regarding the End User Licence. Importantly, and unlike the majority of Census outputs, this licence has two specific conditions:

  1. data is licensed on an individual basis (not an organisation), so users are required to ensure only licensed individuals can access the Safeguarded data files.
  2. Users are also required to suppress any counts lower then 3 or replace 1s or 2s with 0 or 3.

SASPAC v9.93 is required to access these tables and more details on this dataset are available on our dedicated flow data page.

To support access to these datasets we are running a series of training courses specialising in flow data – a programme for the day is here (.pdf) and dates here. Flow data training materials and videos are also available.


Incorrect 2011 Workplace flows

19/11/2014

Following users’ concerns over unusual flows in the 2011 Workplace tables released at the end of July (i.e. flows between LAs with large distances between them), ONS have investigated the issue and discovered errors in the coded workplace addresses. There is no plan to re-release these tables but a quality report (pdf) is now available which explains the issues and areas effected.


Flow data

20/10/2014

Today ONS updated the timetable for the publication of the 2011 Census flow data. These datasets relate to:

  • Travel to Work (or study in Scotland)
  • Migration
  • Second Residences
  • Student migration

The next data to be published will be four Safeguarded migration tables including:

  • OA to OA/country flow (counts)
  • ward to ward flows by sex and age 

These are expected to be available later this month, with the Secure tables coming in November and safeguarded tables in December.

All Safeguarded tables will be available in SASPAC and users will be able to download the System Files from the UKDS website directly (having registered and accepted the T&Cs).

All Secure flow tables will only be accessible to approved researchers via the ONS secure VML (Virtual Microdata Laboratory). SASPAC will be available in the VML to allow our users to integrate these datatsets.

More details on the flow data, including table layouts, can be found on the ONS website and details of SASPAC’s specialist OD training courses here.


SASPAC Training – OD Flow data

03/09/2014

The SASPAC team have developed a new training course to support users’ access to the Origin/Destination flow data that has begun to be released by the Census Offices. This dataset includes details of usual residents:

  • Travel to Work (or study in Scotland)
  • Migration
  • Second Residences
  • Student migration

SASPAC provides users with the tools to access, manipulate and analyse this complex dataset. The course is designed for current users of the software interested in using the application to understand the flow data – a course outline can be seen here. The first course is scheduled for Wednesday 17th September at City Hall and more dates can be found on our booking page.

NB: In order register on this course you must have been on the Introduction to SASPAC course or be a long-time user of the software.

The first set of Public Flow data tables were released at the end of July and further releases (Safeguarded & Secure) are scheduled for the end of September and then again in November. All of these tables will be accessible through SASPAC either on users’ desktops (following the completion of the necessary licence) or the Census Offices physical sites via the Virtual Microdata Laboratory (VML).

Please contact info@saspac.org if you are interested in securing a place. We will allocate places on a first-come-first-served basis.