You can read the letter in thetimes.co.uk here. The full text of the letter is as follows:
Sir, Clare Foges notes that net immigration from the EU has dropped to its lowest level in a decade. She implies that the UK’s approach to family migration from non-European Economic Area countries, including the “minimum income” requirement (which the Supreme Court described in 2017 as “particularly harsh”), has been too lax. Our fellow EU27 citizens rightly feel that, since 2016, Britain has become a less welcoming place for them and their families. The idea of a pecking order of “desirable migrants” may serve only to exacerbate this feeling.
Dr Ruvi Ziegler
Associate professor in international refugee law, University of Reading