As already mentioned in the comparison between the US rated R version and the german VHS tape, the britsh version was only released shortened. And just like in the US version only the pre-title-sequence could not escape unscathed. In principle so many seconds like in the rated R version however in less cuts and on other positions.
For finalization now the comparison between the uncut german VHS tape (Embassy, unrated and put on the index) with the shortened british tape (Embassy, BBFC 18):
Ida is being molested. A counter cut onto the barking dogs is missing followed by a close-up where she gets another hit right into her face.
( 5 sec. )
More brutal takes where she get ripped her clothes of, Tom spreading her legs, moisturizes her and starts raping.
( 47 sec. )
A close-up of the sweating Tom still humping plus a counter cut onto the approaching dogs.
( 10 sec. )
Two takes of the injured Tom are missing among there is an extreme close-up of his shredded leg.
( 3 sec. )
Again a frontal view onto the bleeding Tom followed ba a close-up onto Ida’s face.
( 6.5 sec. )
When Ida smashes his head with a stone here too the frontal view of the bleeding Tom is missing.
( 3 sec. )