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EU net migration ‘consistently higher’ than first thought, admits Office for National Statistics

Written by on 21/08/2019

EU net migration was “consistently higher” than first thought while non-EU net migration was lower, the UK’s statistics body has admitted.

The Office for National Statistics (ONS) has requested that migration figures be reclassified to “experimental” statistics after discovering they could have been misestimated over the last few years.

On Wednesday, the ONS revealed it under-estimated levels of migration to the UK from the EU, due to uncertainty over the numbers from EU8 countries.

These are Poland, Lithuania, Latvia, Hungary, Slovakia, Slovenia, Estonia and Czechia.

“Our adjusted EU net migration estimates show a very similar trend over time but are consistently higher than the unadjusted estimates, indicating that we may have been underestimating net migration from the EU,” the ONS said.

“In the year ending March 2016 – the latest point at which we have adjusted data available – EU net migration is around 16% higher than our published estimate.”

The ONS also admitted non-EU migration figures were over-estimated.

“Our adjusted non-EU net migration estimates also show a very similar trend but are consistently lower than unadjusted estimates, indicating that we may have been overestimating net migration from outside the EU,” it said.

“In the year ending March 2016, net migration is around 13% lower than our published estimate. In the year ending December 2018, this is around 8% lower.”

Former prime ministers David Cameron and Theresa May stuck doggedly to a target of reducing net migration to less than 100,000 per year, despite never once reducing migration numbers below that level.

The level of EU migration was also a key debate prior to the Brexit vote in June 2016.

Boris Johnson, a leading Vote Leave campaigner, has ditched the target since entering 10 Downing Street and favours a points-based system such as that used by Australia.

The ONS announcement means the EU migration estimate for the year ending March 2016 rose by 29,000 from 178,000 to 207,000.

In the same period, the estimate for non-EU migration fell by 25,000 from 193,000 to 168,000.

The UK Statistics Authority, which is responsible for oversight of the ONS, has accepted the request for migration figures to no longer be treated as “national statistics” – which are expected to meet the highest standards of trustworthiness, quality and value – but as “experimental” statistics.

Ed Humpherson, from the regulatory arm of the UK Statistics Authority, urged the ONS and other government department to prioritise work to improve estimates.

“It remains critical for decision makers, including politicians, businesses and the public to have robust and reliable migration estimates,” he said.

Madeleine Sumption, director of the Migration Observatory at the University of Oxford, said: “We have been pointing out for a while that something wasn’t quite right in the net migration statistics, and that the comparison of EU versus non-EU net migration did not seem plausible.

“This matters because for the past nine years the UK policy debate has been fixated on a single data source, which couldn’t bear the load that it was forced to carry.”

(c) Sky News 2019: EU net migration ‘consistently higher’ than first thought, admits Office for National Statistics