Hello. I am type 1 diabetic, and have been on insulin for 55 years. I have been using Aviva test strips, 3 tubs of 50 strips every month. About 10 weeks ago my GP reduced the tubs to only 2 a month. Result has been I have been buying additional strips. Good news is, I have discovered SD CODE FREE STRIPS, costing only ?4.99 for 50. I have been comparing reults along side the Aviva strips and have found no difference to speak of. If anyone is forced to buy strips then I recommed these strips. They are good value. Has anyone else discovered these strips?