A recent survey at the Crick showed that half of respondents felt it is now less likely they would stay in this country when they look for their next role and that included the U.K. nationals
Not that 'recent' - November 2018 - and still part of the 'Stop Brexit' propaganda. Currently on the Crick website; "We haven’t seen any reduction in the number of talented international researchers wanting to come here."
"January 27, 2020 Expert reaction to announcement about a new Global Talent visa scheme"
Positive endorsements from the University of Cambridge, the Royal Society, Universities UK, CaSE [Council for Advancement and Support of Education], the Royal Statistical Society, the Royal Society of Engineering, Wellcome, the Association of Medical Research Charities, the Academy of Medical Sciences, UK Research and Innovation;
www.sciencemediacentre.org/expert-reaction-to-announcement-about-a-new-global-talent-visa-scheme/
Some more positives:
"Today’s changes introduce a fourth route covering two types of employees at UK universities and research institutions."
"The first is post-doctoral researchers: those at an early stage of their academic career, having just gained their PhD.The second is specialist technologist roles."
"This latter group is the most significant, and is a group which the sector has previously identified as being particularly vulnerable to being shut out under a post-Brexit immigration system." ...
"This new category will provide the research sector considerable freedom to recruit the researchers and specialists it needs via the medium of research grant funding, without day-to-day Home Office scrutiny.This is hugely significant, given the context of the current immigration system, but it should not be interpreted as a route which will allow unregulated migration."
www.freemovement.org.uk/new-global-talent-visa/
"Brunel backs new Global Talent visa for attracting researchers"
Global Talent visa: At a glance -
-- The Global Talent visa will be open to people who work in a qualifying field and have been endorsed by a recognised UK body.
-- There is no cap on the number awarded.
-- It ensures dependents have full access to the labour market.
-- It preserves Tier 1’s flexibility of not requiring an individual to hold an offer of employment before arriving, or tying them to one specific job.
-- It provide an accelerated path to settlement for all scientists and researchers who are endorsed on the route.
-- There will be an exemption from absence rules for researchers, and their dependants, where they are required overseas for work-related purposes, ensuring they are not penalised when they apply for settlement.
-- Managed by UK Research and Innovation (UKRI).
www.brunel.ac.uk/news-and-events/news/articles/Brunel-backs-new-Global-Talent-visa-for-attracting-researchers