I've been getting nice clear positives on Boots own tests this week but the OS tests I took have all been sooooo faint. Have taken them every day to see if I can see a progression, and couldn't really. Maybe from soooooo faint to soooo faint 
Took a digital test this morning and it says 2-3 and the one step is still on the faint side, what you can see in the pic appeared just before the time window.
Please don't waste your money or mental energy on these terrible tests! If they've worked for you awesome but there are obviously bad batches out there.
Good luck to everyone TTC!