In the case of the body on the moor, they have been liaising with DS John Coleman and his team.

Coleman has been a police officer for about 20 years.

Thinking back to December, he says, even when he realised there were not any possessions which showed who the man was, he still had a “realistic expectation that we would identify the male within certainly a matter of days”.

Six months on, he says, in his experience, the case “is unique - I’ve never come across a similar set of circumstances”.

What started as a body on a hillside in the Peak District has become a multi-national investigation.

Coleman says he is now “dependent on the recollections of consultants and hospital staff and on record-keeping in Pakistan”.

He is trying to find out the length of time that records are kept in the 12 hospitals which have used the type of titanium plate found in the man on the moor’s left leg.

If X-rays of serious leg injuries over a number of years can be examined, he believes he will finally be able to give the man his proper name.

Coleman says, no matter what happens, the effort has been worth it.

“We’ve got the family members out there who may not even know that the gentleman has died. I think we have a duty to the family to let them know what has happened.”