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Essex Police are appealing for information following the murder of James Attfield in Colchester.
A family have been traumatised after an armed gang burst into their home. Can you help?
Sussex Police are appealing for information following the murder of Valerie Graves.
Officers investigating the disappearance of Madeleine McCann have issued a further appeal for information.
South Yorkshire Police are appealing for information following the murder of Simon Holdsworth in December 2013.
On Halloween into the early hours of Friday 1 November 2013 a woman was subjected to a sexual assault whilst walking home in Cardiff.
On Saturday 16 February 2013 Joseph Burke-Monerville was shot dead on a busy London street.
A gang of masked men raided Kevin Bloor's family home in November last year.
83-year-old Bill Edmunds was violently attacked in his own home in October 2013.
Met police are reinvestigating a triple shooting at a nightclub in Ilford, in which a doorman was murdered and two others wounded.
The Metropolitan Police are investigating the abduction of Madeleine McCann in May 2007.
On Wednesday 31 July, 2013 two women were attacked during an armed robbery at The Clock Shop in Porthcawl.
On Wednesday 7 October 1992, 7-year-old Nikki Allan disappeared from Wear Garth, Hendon, Sunderland. Her killer remains at large.
On Tuesday 21 May into Wednesday 22 May 2013 six men carried out an aggravated burglary at a farmhouse in rural Woldingham
A young woman was sexually assaulted in Dunstable, Bedfordshire, in the early evening of 21 February 2013
On 12 January 2013, 86-year-old Una Crown was murdered in her home in Wisbech.
On April 22 1993, Stephen Lawrence was stabbed by a gang in Eltham and bled to death.
A pensioner was attacked in his home in Bradford and died as a result of his injuries.
A mother and her five children died after someone deliberately started a fire at their family home in Barn Mead, Harlow, Essex.
A family were held up at gunpoint in their rural home by a gang demanding cash and valuables.
Lee Erdmann was gunned down in the Wellington pub in Salford on Saturday 10 September 2011. Police are urging witnesses to the shooting to come forward.
On Saturday 10 September 1988 15-year-old Lee Boxell left his home and never returned.
Nightclub worker David 'Les' Ross was found murdered in his hotel room in Corby on 17 December 2012.
Reggae singer Scoobie Santino AKA Ian Newtion was murdered in Greenford, London, in the early hours of Mother's Day 2009.
The Royal Military Police are re-investigating the disappearance of Katrice Lee who has been missing for over thirty years.
Avon and Somerset police want to trace the man who attempted to sexually assault a woman in Weston-super-Mare before running off.
Crimewatch appealed for help to catch the killer of Ricky Smith in 1998. New forensic techniques show Ricky wasn't the killer's only victim.
Appeal for information after the shooting of a Russian banker in London.
Police investigating three sex attacks in Gloucestershire over a period of six months fear they could be linked.
A 15-year-old girl was raped in Chislehurst, Greater London in July 2011. Were you in the area that night? Do you recognise the e-fit of the offender?
Armed raiders confronted an eight-month pregnant woman at her home in Wollerton, Shropshire.
With festival season approaching we investigate the rise in deaths from 'legal highs'.
Police Scotland are appealing for information following the theft of a statue said to be worth around £3 million.
Martin Bayfield finds out about a scam that's making the roads more dangerous for motorists.
Can you help Metropolitan police identify this burglar with extremely expensive tastes?
Officers have released CCTV of a man they think could help solve the mystery of what happened to Raymond Scott.
Martin Bayfield follows Hertfordshire Police in their fight against the criminals who are deliberately targeting the elderly and vulnerable in their own homes.
On Saturday 8 February 1997, 31-year-old John Kennedy was stabbed following a fight in the Railway Arms Public House, Wapping, East London.
Detectives investigating the murder of Melanie Hall are appealing for information about a car they need to trace.
Police need your help with these cases
Matthew follows the specialist unit cracking down on the online haters.
Damian Chlywka’s decomposed body was found by labourers in a suburban garden in Croydon.
A priceless water lily plant has been stolen from the Royal Botanic Gardens Kew.
Valerie Graves was found dead at a house in West Sussex, December, 2013.
In June 2013 a 21-year old male was walking home after a night out in Watford. Two males tried to take his phone and forced him to perform a sexual act.
19-year-old Luke Durbin, failed to return home after a night out in Ipswich in May 2006.
We’ve been out with the newly formed National Crime Agency as officers tackle the use of false passports by high level criminals.
We’ve been out on the rails and roads of Britain, now we’re asking for your help with several pieces of CCTV featuring attacks and thefts on public transport.
Police need to trace a man captured on CCTV that they believe may have vital information about a series of burglaries
There are an estimated 1 million unique images of child abuse online
Police are re-appealing for information about the shooting of a young electrician from Paddington
British transport police are investigating a number of mobile phone thefts
Police are investigating the fatal shootings of a British family on holiday in the French Alps
Eighteen-year-old Andrew Jones died after being assaulted on a night out in Liverpool
Police are hoping British holidaymakers might hold the key to finding out what happened to a backpacker who went missing in Thailand 5 years ago.
Detectives are appealing for information about the disappearance of a Bradford businessman who vanished on Valentine's Day in 2007.
Sussex Police want to trace a man in connection with the rape on Brighton beach on Friday 7 September 2012.
An elderly woman was subject to a violent attack and burglary in her own home, with raiders stealing a large amount of jewellery.
Wayne Stockdale was shot in the head by two men as he cycled through a block of flats in Bow, East London. He died four days later from his injuries.
Police want to catch the man who broke into an elderly couple's home as they slept and held them hostage.
Police are appealing for help to trace the owners of £300,000 of jewellery.
Can you help trace these people caught on camera?
Do you recognise any of our Wanted Faces?
Get in touch if you have information about any of the cases featured on Crimewatch.
Find out about some of the recent cases solved as a direct result of calls from Crimewatch viewers.