The following evidence was tampered with by police while Angus
Sibbet’s Mark X was in police custody:

The Cigar packet and cellophane wrapper.
Angus was a non-smoker.

In the next photograph it’s vanished, but isn’t logged as evidence or
forensically tested for fingerprints.

Angus’ leather cash bag.
Again, it isn’t logged as evidence and is never seen again, yet it could
have filled in the gaps in Angus’ whereabouts before he was killed.