Disney was quick to boast that Infinity War is now the biggest superhero film of all time in the UK market, ahead of The Dark Knight Rises (£56.3m).
Infinity War experienced the biggest drop of any film in the UK Top 10.
Avengers: Infinity War, which fell a steep 57% in its second session, declined a gentler 44% in its third weekend of play.
Infinity War ended the weekend as the fifth-biggest hit worldwide, with $1.61bn, behind Avatar ($2.79bn), Titanic ($2.19bn), Star Wars: The Force Awakens ($2.07bn) and Jurassic World ($1.67bn).