I've just googled Leicester in 2016 and funnily enough found this article from January 2016;
Thousands of Indians entered Britain illegally using fake documents bought from criminals exploiting an immigration loophole exposed by The Mail on Sunday last week.
The forged papers entitle holders to obtain EU passports using a bizarre but entirely legitimate back door which gives those living in former Portuguese colonies the right to come to Europe.
An estimated 3,000 Indians have entered the UK in this manner with the help of a gang operating in Lisbon, London and Leicester, paying the criminals up to £22,000 a time.
Under Portuguese law, Indians born in Goa, Diu and Daman before 1961, or their children and grandchildren, can apply for Portuguese passports because these were colonies of Portugal until that year.
As a result, 20,000 Indians [see also a higher figure quoted in the article below] obtained Portuguese passports in India, and came straight to Britain without even setting foot in Portugal.
Now we can reveal that Portuguese police and the UK’s Home Office and National Crime Agency have gathered evidence indicating that 3,000 Indians obtained the passports with false birth and marriage certificates provided by the gang.
In December [2015] Home Office, NCA investigators, Leicestershire Police and Portuguese immigration officers raided seven properties in Leicester and one in London.
https://www.dailymail.com/news/article-3413942/How-3-000-Indians-got-UK-fake-papers-sold-Portuguese-gangs-exploiting-immigration-loophole.html
According to this article published in 2022 - 143,018 people born in India applied to the EU Settlement Scheme - 72,921 with EU passports plus 70,097 non-EEA family members.
The most common non-EU country of birth for EU nationals is India. The most common EU nationality for people born in India is Portuguese. This is because Goa, Daman and Diu were Portuguese colonies. 55,788 Portuguese nationals currently resident in the UK were born in India.
https://ukandeu.ac.uk/diversity-eu-national-population-uk/