The Major Incident Team at Winsford Police HQ in Winsford, Cheshire are appealing to dentists to check their records for any contact with an individual called John Thomas Iveson.

Mr Iveson, who was born on 13 August 1971, disappeared from Nantwich, Cheshire on 30 January 2007. The police are emphasising the importance of the enquiry in establishing the fact that Mr Iveson is deceased.

Mr Iveson, who had aliases of Butler and Nolan, was last seen alive on 30 January 2007. He has not contacted anyone since that date and it is believed that he was murdered.

As part of the criminal case, the police will need to show that Mr Iveson is in fact dead. Part of the evidence will be to prove that he has neither been seen nor registered/had any contact with any organisation, agency or public body.

Anyone with a record of contact with Mr John Thomas Iveson on anyone using the permutations of his name (John Butler/John Nolan) is requested to contact the Operation Pisces Incident Room on 01606 366533 or jill.cope@cheshire.pnn.police.uk.