There appears to be some confusion about what constitutes rape in UK law. To clarify-this from Police UK
”RAPE.The legal definition of rape is when someone puts their penis in another person's vagina, anus or mouth, without the person's permission.
ASSAULT BY PENETRATION. Assault by penetration is when someone puts an object or any part of the body other than their penis (for example fingers) into another person's vagina or anus, without the person's permission.
SEXUAL ASSAULT. Sexual assault is when someone touches you sexually without your permission, with an object or body part.”
So rape is specifically and exclusively non consensual penetration by a penis.