The above comment is unlikely to be correct - though Greedyfly probably knows this.
The purpose of making the claim would be to enable the dismissed employee to draw on the National Insurance Fund - not in the expectation that the insolvent company is going to cough up. The route to a claim on the HIF is, I believe, through an ET, though I'm not sure.
Some info here, Greedyfly - though you may have established this is the correct route already.
http://www.direct.gov...ngYourJob/DG_10026695