As you have indicated Exchange & Mart is on line. I have just tried it and found it a little tricky 'clicking' through the site.
Try clicking at top of page.....Items for Sale > Buy an item...and so on. You'll be surprised at what is on offer....Household Goods, Tools Furniture etc etc.
You might be asked for a Post Code to help the searches you make, but Not name and address or even house number. You could, if you feel doubtful about giving your postcode, pump in one in your area.
http://www.exchangeandmart.co.uk/items-for-sale/buy-an-item
Hans.