LONDON — Lawmakers hurling heavy pieces of office equipment at aides, groping their breasts and slapping their backsides. Sexual harassment as a “necessary evil” for young staffers. Aides ordered to vacuum and tidy up their bosses’ apartments for private parties.

Those accusations, contained in a blistering report on Britain’s Parliament released on Thursday, offered lurid details and descriptions of rampant rule breaking in a picture of the working lives of 3,200 staff members in the House of Commons.

Ordered up in October, as British officials picked through an avalanche of stories about misbehavior in Parliament amid the #MeToo movement, the report and a twin released a day before about the House of Lords, describe a universe in which lawmakers wielded virtually absolute power, and the rules and practices of the outside world had little relevance.

Because they directly employ their aides, lawmakers have long been virtually immune to charges of sexual harassment or bullying and most other oversight. They openly recruit friends and relatives, discriminate in their hires, and force aides to campaign during what is supposed to be government time, the report said.