Don't bother if your script shows BVA
Spent ages choosing specs, getting the photo for my varifocals, getting a copy and uploading the prescription. I then got an order cancellation because it contained Base Vertex Distance (BVA) of 12 which is normal. However, they are using it as Binocular Vision Dysfunction. So basically, forget using them if you have been to Specsavers! A warning on the website would be useful to save wasting everyone's time. I did get the refund quickly which was something.