Mad_Cyril Ah the good old Offences Against the Persons Act 1861
Unnatural Offences
61Sodomy and Bestiality.
Whosoever shall be convicted of the abominable Crime of Buggery, committed either with Mankind or with any Animal, shall be liable, at the Discretion of the Court, to be kept in Penal Servitude for Life or for any Term not less than Ten Years.
or the unfortunately numbered section 69 of the Sexual Offences Act 2003.
Not my specialist subject I would hasten to add.