Also I assume that Durkon is meant "murder fer a decent pint" not "murder a decent pint".
Or wait, maybe he means murder as in drink savagely.
"I could murder a [foodstuff/drink]" is a common expression round here denoting intense desire for it.
"They couldn't know that the points from the mainline to the siding were frozen, and the signal should have been set at 'DANGER', but snow had forced it down."
- The Flying Kipper