Can you not just order from a birmingham JL.... or does it have to be the one nearest to you?
Edit... to include an extract from JL terms...
Our commitment to checking and lowering prices applies on the same basis to products in our competitors' Sales. Where a competitor has a very short term promotion lasting only one or two days, we may not have enough time to check and change each price. However, our refund promise still applies.
If you have purchased an item from one of our shops and then find the same item selling for less in any UK shop, we will refund the difference. As we do not wish you to regret buying from us, we allow you up to 28 days from the date of purchase to claim this refund. We meet such claims on the same basis as the price checking done by our shops described above.
Our promise to you extends beyond the local area to cover any conventional shop in the UK where you find the same item on display at a lower shelf-edge price with the same availability and terms.