Horror film Hereditary opens with £1.9m.
Film debuts lower than previous Jurassic World.
Spin-off grosses less than half of the four-day opening of Rogue One.
Ryan Reynolds sequel easily tops Avengers: Infinity War in opening weekend.
The running total is now £60.35m, surpassing the £56.3M achieved by The Dark Knight Rises in 2012.
Marvel sequel posts strong hold despite sun-soaked weekend.
Marvel superhero film beats Saturday record; scores third biggest UK opening of all time.
Substantial drops across the top 10 recorded as good weather hits the UK.