Remove the affected growth and blast them with a strong jet of water. If that doesn't help, it's definitely blight.

I removed 2 yesterday..there's so much ugliness you can't get a good looking shrub no matter how much you prune..I would rather have nothing than something ugly..

A property in Britain is fighting the blight using a solution based on old citrus fruits. But plant you showed has no blighted looking areas. However, you might get it later anyway. Myself I would just as soon do without box than try to manage a blight that showed up on it.

Agree..whether blight, spider mites or something else I hate the way they look now..the time, effort and money involved to treat an ugly shrub isn't worth it to me..I think my spotted leaf in pic#2 looks like blight..other shrubs (now in a trash bag) had lots of spots..

I have 5 littleleafs, and 2 variegated english boxwoods. I haven't seen any blight in our area. I hope the variegated ones don't get blight, because they were an expensive $15 each! You could always replace with japanese holly.

I don't have any that cost much..most of mine were small (12") and cost less than $2 on clearance..hope yours stay healthy..

If that montage you posted was all from your plants then yes something is producing brown areas.

the 2 pics in the original post are my plants..the assorted pics in the comment later I found online but remind me of my plants..my plants ARE sick and I'm starting to remove them..just curious to get an opinion..