Police used BBC Crimewatch to appeal for information over the murder of a polish man whose body was dumped in a well in Warlingham.
32-year-old Damian Chlywka's decomposed body was discovered wrapped in tarpaulin in a well at a house in Audley Drive by two gardeners on November 15.
He was identifed two weeks later.
A murder inquiry is ongoing, with police revealing on the programme on Wednesday he had been "severely beaten, and had many broken bones".
An unregistered Oyster Card, found in his clothing, had last been used on April 27 2011 - which corresponds with his last known sighting.
Detective Michael Norman said on the programme last night it is believed Mr Chlywka had come to live in the UK after responding to a job advert.
He had worked in a number of business in Croydon and Surrey, including car washes.
The house where he was discovered had been used as accommodation for Polish workers since 2006.
As a result, over 80 Polish men have lived there. A large number of other Polish men have used the house as a drinking venue.
The police said of these could be a witness to, or suspect involved in the murder.
Nine people arrested in connection with the murder are currently on bail as the investigation continues.
Any witnesses or anyone with any information is asked to call the incident room on 020 8721 4961 or call Crimestoppers anonymously on 0800 555 111.
- Sports car spins on M25 near Leatherhead
- Driver in hospital after two cars crash in Selsdon
- Objectors could seek judicial review on controversial South Norwood Oasis Academy Arena school decision
- Sci-fi filmmakers turn Croydon College into a hospital
- Future Shorts film festival in Croydon for first time