London's population and the 2011 Census - London Regional Committee Contents


4  Government use of Census outputs

131. The Department for Communities and Local Government has ring-fenced a total of around £29 billion to be distributed across England in formula grant in 2010-11.[111] In order to allocate this in reasonably direct proportion to local authorities' populations, it is vital that population projections are accurate.

132. While population projections for the purposes of resource allocation are not directly based on decennial Census data, the Census outputs provide the base for calculation of annual mid-year population estimates. In addition, a range of Census outputs influence decisions that form the basis of sub-national population projections. Questions relating to age, gender, fertility, mortality and migration are key to enhancing the accuracy of such projections.[112]

133. It has been acknowledged throughout the evidence we have taken that London has the largest number of hard-to-count groups at a Census, and a substantial population that the Census does not even attempt to count. A large proportion of this population is comprised of internal migrants as well as international migrants, all contributing to a considerable short-term population churn in London which is difficult to capture in official statistics.

134. Many London boroughs currently use locally-derived data to supplement population estimates. Data sources commonly relied upon by boroughs include school data, GP registers, National Insurance numbers, and electoral rolls. However, boroughs accept that these sources alone cannot reflect their populations.[113] This is because the groups who are typically not recognised by the Census are similarly not recognised in these datasets. The London Borough of Havering suggested to us that new migrants may not register at a GP's surgery, simply preferring to attend hospital if necessary, and similarly may not be registered on the electoral roll.[114] Furthermore, whilst some short-term migrants may be identified in these local registers, when they have been omitted from estimates or the Census, their presence is dependent upon the length of their stay and their level of interaction with local services.

135. Boroughs have taken the opportunity to raise with us their concerns about the use of population data by the Government in determining funding settlements over the past decade. It would take an inquiry with far greater scope than ours fully to unpick the detailed criticisms which have been made about the use of data used by ONS to calculate mid-year population estimates and sub-national population projections.

136. For example, London Councils and the London Borough of Southwark both raised with us the changes made by ONS in 2007 to its methodology for apportioning migration flows to the UK across mid-year population estimates. When applied to the 2004 mid-year estimates and projected forward to 2010 in the ONS sub-national population projections, Southwark Council estimated that this recalculation had led to a reduction in London's total estimated population of 109,000 in 2008, 123,000 in 2009 and 138,000 in 2010. These new figures were used by the Department for Communities and Local Government in calculating the share of formula grant to be assigned to London boroughs. London Councils estimated that the consequent loss to London boroughs in undamped formula grant between 2008-09 and 2010-11 has been £130 million.[115]

137. The issue of population projection re-basing in 2007 following the recalculation of migration statistics is not, strictly speaking, one which concerns the Census. But a more robust and accurate system for statistical projections, which commands greater confidence in London boroughs, must start with a better 2011 Census, with a far higher response rate across Inner and Outer London boroughs and less reliance on imputation of results.

138. We have indicated above the submissions made by a number of boroughs who believe that they have lost funding as a result of 2001 Census errors, compounded by inaccurate mid-year estimates and population projections. The Government Office for London told us that they had not attempted to estimate the possible losses to London in funding as a result of flaws in the Census base: "it would be difficult to establish a correct figure without running all those [funding] formulae nationally again, because of the way that is constructed."[116]

139. The Minister for London undertook to provide us with a calculation of the extent to which London boroughs had lost out through errors in the 2001 Census, though she indicated there were substantial methodological problems with making a calculation.[117] We recommend that, in its response to our report, the Government include the memorandum promised by the Minister for London on the effect on London boroughs of population underestimates in the 2001 Census outputs and subsequently.

140. We heard from the Minister for London that many of the financial consequences for London boroughs of statistical undercounting in previous years would be mitigated by the effects of floor damping in the allocation of formula grant, ensuring that "no authority gets less than the previous year on a like-for-like basis."[118] Tony Travers put it more starkly:

    "[...] as we move to an era where grants are not going up very much from year to year, whatever is going into these formulae is not going to affect the distribution of grant, because we are moving very rapidly towards an effective freeze on the grant. Many London boroughs are already very close to a grant freeze anyway. If there is a grant freeze from year to year, all of this numeric need assessment would actually matter much less."[119]

141. While the logic of this argument may be clear, it provides little excuse for any inaccurate counting, estimation or projection forward of the numbers of people in London for whom London boroughs are expected to provide services over the next decade. Funding for local government in London should accurately reflect the needs of the population which local government serves. As we stated at the opening of our report, without an accurate, accepted calculation of who lives in London, all other discussions about services in the capital are undermined.


111   Written Ministerial Statement by the Parliamentary Under-Secretary of State, Department for Communities and Local Government, Official Report, 26 November 2009, columns 87-88WS. Back

112   Ev 121 [London Borough of Redbridge] Back

113   Ev 135 [London Borough of Havering] Back

114   Ibid. Back

115   Ev74[LondonCouncils]andQ114: London Councils have subsequently written to clarify the figure [Ev 148]. Back

116   Q190[ChrisHayes] Back

117   Q188. Back

118   Q 202 Back

119   Q 15 Back


 
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