Green’s Dictionary of Slang

knockings n.

1. the residue of one’s funds; also fig. use as nearly dying [? knock-down money under knock-down n.].

[UK]F. Norman Bang To Rights 137: When I was on the last knockings I tried to get my bird out earning again.
[UK]Barltrop & Wolveridge Muvver Tongue 87: ‘On the last knockings’ or ‘hasn’t got long to go’ are for a fatal illness.

2. information, facts [knock-down n. (3)].

[UK]J. Cameron Vinnie Got Blown Away 163: Ash someone tell you about it, Jimmy or Rameez or Sherry give you the knockings.
[UK]J. Cameron Hell on Hoe Street 16: Not likely he tell your mum and dad all the knockings.