It argues that the new system, while ending free movement with the EU and hence being far more restrictive for EU citizens moving to the UK for work, is considerably less restrictive.
Immigration
 was central to the politics of Brexit (Hobolt 2016), but was peripheral
 in the pre-referendum discussion of its economic consequences (Portes 
2016).  Indeed, both before and in the immediate aftermath of the 
referendum, the UK’s choice was often framed as a tradeoff between the 
economic costs of increasing trade frictions between the UK and EU on 
the one hand, and the political benefits of ending free movement and 
restoring ‘control’ over immigration on the other (e.g. Baldwin et al. 
2016). 
Since the referendum
 this has reversed – immigration has become a much less salient 
political issue, and public attitudes towards immigration have become 
more positive (Runge 2019). However, its economic significance has 
become more apparent, first as migration flows from the EU fell sharply 
and then, in the past year, as the COVID-19 pandemic has led to very 
large net outflows. Forte and Portes (2017) forecasted that net EU 
migration could fall by up to 150,000 over the period between 2016 and 
2020. These forecasts have proved broadly accurate.  As Figure 1 below –
 from the last set of published migration statistics, before the 
pandemic made collecting them impossible – shows, net EU migration did 
indeed fall by slightly more than 150,000 by the end of 2019.
Figure 1 Net migration by citizenship, UK, year ending March 2010 to year ending December 2019  

Source: UK Office for National Statistics, 2020
At the same time, 
there was also a significant rise in non-EU migration, facilitated by 
government policy, with the cap on Tier 2 visas for non-EU migrants 
(that is, relatively skilled or highly paid workers) being relaxed. This
 marked the end of the Theresa May era in immigration policy, during 
which the overriding objective of immigration policy had been to reduce 
numbers.  It is against this background that the UK is introducing the 
new, post-Brexit immigration system.  In a new paper (Portes 2021), I 
discuss the new system, and outline some of the potential 
implications.  
As I set out in 
Portes (2020), this system was shaped by two broad forces.  First, the 
government’s commitment to ending free movement and moving to an 
‘Australian-style’ points system, which would treat EU and non-EU 
migrants similarly. As a result, the UK-EU Trade and Cooperation 
Agreement contains very limited provisions on labour mobility. But 
second, significant shifts in both public opinion and government policy 
towards immigration in general. Opinion polls suggest that voters have 
simultaneously become both much less concerned about immigration and 
much more positive about its impacts (Runge 2019).  Moreover, the 
replacement of Theresa May, who had been a notably restrictionist Home 
Secretary, with Boris Johnson, who had adopted relatively liberal 
positions on immigration during his tenure as Mayor of London, signalled
 a change in the relative priorities within government attached to the 
economic benefits of immigration compared to the political need to be 
seen to be controlling it.  
The policy intent of
 the new system is therefore less about reducing migration, and more 
about making it both more diverse (in a geographic sense) and more 
selective (in relation to the skill level of workers).  Free movement 
ends and the new system will apply to all those moving to the UK to 
work, apart from Irish citizens. EU (and EEA/Swiss) nationals already 
resident in the UK are able to apply to remain indefinitely under the 
“settled status” scheme, and most have already done so.
 The key provisions of the new system are that:
- new migrants 
should be coming to work in a job paying more than £25,600 or the lower 
quartile of the average salary, whichever is higher, and in an 
occupation requiring skills equivalent to at least A-levels (“RQF3”); 
- there will be a 
lower initial threshold for new entrants and for those in shortage 
occupations, meaning that for some occupations the salary threshold may 
be as low as about £20,000; 
- there will also be a lower threshold for those with PhDs, especially in STEM subjects;  
- for the National 
Health Service and education sectors, there will in effect be no salary 
threshold. If the job is at an appropriate skill, then paying the 
appropriate salary according to existing national pay scales will be 
sufficient; 
- there will be an 
expanded Seasonal Agricultural Workers Scheme, but no other sectoral 
schemes for workers who do not meet the skill threshold. 
The new system 
will represent a very significant tightening of controls on EU migration
 compared to free movement. Migrants coming to work in lower-skilled and
 paid occupations will in principle no longer be able to gain entry. 
Even those who do qualify will need their prospective employers to apply
 on their behalf, will have to pay significant fees, and will, as is the
 case for non-EU migrants at present, have significantly fewer rights, 
for example in respect of access to the benefit system. 
However, compared to
 the current system, the new proposals represent a considerable 
liberalisation for non-EU migrants, with lower salary and skill 
thresholds, and no overall cap on numbers.  Approximately 68% of UK 
employees work in occupations requiring RQF3 level skills or above. 
Given the requirement for new migrants to be paid at or above the lower 
quartile of earnings for that occupation, that implies about half of all
 full-time jobs would be in principle qualify an applicant for a 
visa.  This represents a very substantial increase – perhaps a doubling 
compared to the previous system for non-EU nationals, which was also for
 most of the 2012-19 period subject to an overall quota and a resident 
labour market test. It also makes the new system considerably more 
liberal with respect to non-European migrants than that of most EU 
member states, which typically apply much more restrictive (de facto 
and/or de jure) skill or salary thresholds, and often enforce a resident
 labour market test.
So, it is not the 
case that the new system represents an unequivocal tightening of 
immigration controls. Rather, it rebalances the system from one which 
was essentially laissez-faire for Europeans, while quite restrictionist 
for non-Europeans, to a uniform system that, on paper at least, has 
relatively simple and transparent criteria, and covers up to half the UK
 labour market. 
In Portes (2021), I 
discuss the potential economic impacts.  The key point is that 
economists’ views – including my own – on the potential impacts on the 
UK economy of the end of free movement and the transition to the new 
system may have been too pessimistic, based as they were on the 
assumption the new system would be more restrictive.   For example, 
Forte and Portes (2019) estimated that the new system would result in a 
reduction to UK GDP of up to 2% over 10 years. However, updating their 
estimates to reflect the new system results in a much smaller fall in 
GDP, and indeed a small rise in GDP per capita.  
These estimates do 
not take account of the broader impacts of migration, in particular on 
productivity (Portes 2018, Goldin and Nabarro 2018), nor the interaction
 of Brexit impacts with those of the pandemic and its aftermath.  Some 
sectors may be badly hit – for example, higher education 
(Amuedo-Dorantes and Romiti 2021), and there are emerging signs of 
labour and skills shortages in the hospitality sector, as many EU-origin
 workers appear to have returned to their home countries during the 
pandemic.  
An additional 
dimension of uncertainty results from the government’s decision to offer
 entry visas to the almost three million British National Overseas 
passport holders from Hong Kong, and their dependents.  The Home 
Office’s central forecast of the resulting migration flows (Home Office 
2020) is about 300,000 over five years, but its low and high estimates 
are 10,000 and 1,000,000 respectively.  Actual flows will be driven by 
developments in Hong Kong.  If hundreds of thousands of Hong Kong 
residents do come to the UK, the potential impacts could be 
transformative. 
So considerable 
uncertainty remains. Nevertheless, while the overwhelming consensus 
amongst economists that Brexit – and in particular the ‘hard’ Brexit 
pursued by the UK government – will have significant negative impacts on
 trade and investment, and hence on the broader UK economy, there is 
much more cause for optimism about the impacts of the new post-Brexit UK
 immigration system. 
References
Amuedo-Dorantes, C, and A Romiti (2021), “Brexit deterred international students from applying to UK universities”, VoxEU.org, May 15. 
Baldwin, R, et al.  (2016), “Brexit Beckons: thinking ahead by leading economists”, VoxEU.org, 1 August.
Forte, G, and J Portes (2017), “The economic impact of Brexit-induced reductions in migration to the UK”, VoxEU.org, 5 January.   
Forte, G, and J 
Portes (2019), “Migration to Wales: the impact of post-Brexit policy 
changes”, Welsh Centre for Public Policy, University of Cardiff, 
February 2019.
Goldin, I, and B Nabarro (2018), “Losing it: the economics and politics of migration”, VoxEU.org, October 24.
Hobolt, S (2016), “The Brexit vote: a divided nation, a divided continent”, Journal of European Public Policy 23 (9) 1259-1277.
Home Office (2020), Impact Assessment: Hong Kong British National Overseas Visa, October.
Portes, J (2016), “Immigration after Brexit”, National Institute Economic Review, November, 238, R13-R21. 
Portes, J (2020), “Between the Lines: Immigration to the UK between the Referendum and Brexit”, DCU Brexit Institute Working Paper 12-2020, Bridge Network, Dublin, December.
Portes, J (2021), “Immigration and the UK economy after Brexit”, IZA DP No.  14425. 
Runge, J (2019), “Overview of UK attitudes towards immigration”, Briefing, National Institute of Economic and Social Research, August.