UKIP

Far-right Eurosceptic British political party, founded 1993 (4)

Solution has appeared in 2 crosswords (2 across and 0 down):

• Quick crossword No 15,955 — 2021-06-25 23:00:38
  16A: Eurosceptic party, led by Nigel Farage 2006-09 and 2010-16 (4)
• Quick crossword No 15,636 — 2020-06-17 23:00:32
  1A: Far-right Eurosceptic British political party, founded 1993 (4)