The review said the “laddish culture” allowed staff to turn up late because of tattoo appointments or bring their children into work. One put crayons in someone’s coffee. The National Autistic Society has been accused of covering up a care home scandal likened to Winterbourne View “without the cameras” .The charity ran a home in which residents were forced to eat chillies, repeatedly thrown into a swimming pool and forced to crawl around on all fours, a review has found.Mendip House in Somerset was run by a male “gang” who threw cake at residents and forced them to fund staff meals out.One staff member is said to have put a ribbon around a resident’s neck and ridden him “like a horse” while another gave a resident an onion when he asked for a biscuit then sent him to his room when he failed to eat it.The report, by the Somerset Safeguarding Adults Board (SSAB), noted that the NAS conducted internal investigations and had plenty of evidence of “degradation” but had failed to report its own staff to the local council or the Care Quality Commission (CQC).It suggested it was “only a matter of time” before those responsible and accountable were prosecuted, citing a news report detailing how 13 directors, managers and carers were convicted over the mistreatment of vulnerable adults at care homes in Devon. The Mendip House Safeguarding Adults Review makes six recommendations #SABs— SSAB (@SomersetSAB) 8 February 2018 “The staff at Mendip House engaged in behaviour that was cruel, far below the standard expected and…contrary to the NAS’ organisational purpose and values,” the review found. “The NAS’s own records revealed that critical information about Somerset Court (the NAS complex incorporating Mendip House), including poor staff conduct, alleged assaults and drug use or sale, was not shared beyond senior managers who took no action.”Parallels have been drawn with Winterbourne View Hospital, albeit without the cameras.”The report said it was “remarkable” that five years after the Winterbourne View scandal, for which eleven staff pleaded guilty to neglect and ill treatment and six were jailed, concerns about Mendip House were not identified.It called for a nationwide change to the way care homes are managed, noting that none of the six residents Mendip House were local, meaning that their care was not closely monitored by the authorities who had placed them there.Mendip House was eventually closed in 2016 after an anonymous tip off triggered an investigation.The CQC admitted it should have responded to allegations made two years earlier.Staff were disciplined and police investigated but no criminal proceedings have been launched.Sert in 26 acres, Mendip House, near Burnham-on-Sea, was home to six adults and had a staff of 26.It was one of seven dwellings that formed Somerset Court, home to 42 adults and the first specialist centre for people with autism in the UK. Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. When it emerged that residents had been funding staff meals during outings, almost £10,000 had to be reimbursed.One member of staff was accused of failing to take residents out because he was playing on his PlayStation and “couldn’t be bothered.”One resident in her 20s vanished from the site in 2015 and again the following year without staff noticing.The report calls for a national consultation on steps to regulate the commissioning of care placements.It says local authorities and clinical commissioning groups need to take responsibility to actively monitor the quality of care provided for the people they place.Richard Crompton, the independent chair of the SSAB, said: “This happened to be in Somerset, but the weaknesses in the system are nationwide and must be considered at that level.”Mark Lever, chief executive of the NAS, has apologised and said the charity was committed to “making sure that the lessons are learned”.In 2011, an undercover BBC Panorama documentary exposed abuse at Winterbourne View, a private hospital near Bristol for people with severe learning difficulties. Frail and confused residents were pinned down by groups of staff, beaten, soaked with water, trapped under chairs and having their hair pulled and eyes poked.