Yes I know it's Poundland, but this is often not in stock, and I've never seen the spray variety before.
Hope this helps, didn't buy one but seen in Notts and found on the website so it's national and a great time to buy one if you haven't got one in the house already.
Edit: have been informed this product may be similar in nature to WD40 which does appear in this store from time to time. Please check that it's suitable for your needs before purchasing. You should NOT use WD40 on a lock as it may freeze it - you need a light oil (but not as light as WD40!) or silicone lube spray/similar