Green’s Dictionary of Slang

scurf v.

[? SE scruff, to seize by the nape of the neck]

to arrest.

[Aus]Vaux Vocab. of the Flash Lang.
[UK]Egan Grose’s Classical Dict. of the Vulgar Tongue.
[UK]Wild Boys of London I 132/1: ‘Didn’t the chummy collar?’ ‘Didn’t he? Lor, how he sung out when the big peeler scurfed him.’.