I went to HomeHealth UK to order some more test strips as I was running low. Bad news - they have gone up to £7.69 for 50, a 10% increase :-(
Good News - the discount code works - 264086 gives you 20% off when you buy 250 strips (which comes as 5 packs of 50). There's also a code if you buy 10 packs - 975833 - but I can't vouch for that one.
The SD Codefree Blood Glucose Meter has the cheapest Test Strips and it is popular with members on the Forum.
Here is the website for SD Codefree Blood Glucose Meter: