Whitby Bin Men

Whitby Gazette | Naked binmen raise £2,000 for good cause
The 12 workers from Scarborough Borough Council’s waste and recycling departments stripped off last year with just pieces of recyling equipment hiding their modesty.
...The cheque for £2033.60 was handed over to the two charities that will benefit from the money – Yorkshire Air Ambulance and Help for Heroes.

I'm not finding any hint that the calendars were ever available via mail or web order, only from local merchants. But read more at Forces Pen Pals, Scarborough Council and Real Whitby Magazine. Or just search for "Whitby Ben Men calendar". And congratulations to all involved!