I think you are talking about liquidated stock pallets, and if so, while not being 100% sure, I don't think your retail market is set-up like the US.
In Aus, most liquidated stock is sold through sales events, with larger foreclosures going through auctions. As far as I am aware you guys have the same situation in the UK.
Like I said, not 100% sure, but open your phone directory and look for liquidators, if they exist they will be there, but I think you will only find companies that take care of bankruptcy and such.
The US market is the only one that I am aware of that has a liquidation market to clear stock.