1 in 4 adults (25 per cent) use the machines in shops or supermarkets much more than they did at the start, and 14 per cent use them a bit more than they did at the start.

State Pathologist Dr Sally Anne Collis on Tuesday told Dean Caffrey's murder trial that she examined the body of the deceased, Sean McCarthy, at a mortuary in Whitehall in Dublin.

There are now over 2,500 reverse vending machines and over 350 manual collection return points nationwide.