As many as one in five crimes could be going unrecorded by police, a major report has found.
An investigation by Her Majesty's Inspectorate of Constabulary (HMIC) also found some offenders were being issued with 'out-of-court disposals' such as a caution rather than being prosecuted.
Inspectors looked at 13 different forces and said they could not rule out "discreditable or unethical behaviour" from officers for the failure to record some crimes.
More top news
Ashley Yates, 45, used a spy pen hidden inside school bathrooms to film pupils at a primary school.
Joshua Clements stabbed two 19-year-olds while 4,000 people were gathered at the royal park.
The vessel was spotted off the Kent coast at around 5.40am on Thursday.