little personal feedback on Modern tailor:
I'm tall and slim, I like very fitted shirts and never found what I want in standard sizes.
... but I don't want to spend a lot of money in bespoke shirts

I tried tailorstore.com, the cut was perfect but the fabric quality was very poor.
For the same price, I have good fabric quality by Modern Tailor, even if the cut is not so perfect: they take some liberty with the non-standard measures without asking for confirmation.
But I continue to order by them because of the good ratio quality/price, and because of their
outstanding customer service:
- I never received one of my shirts, and despite of the transporter who told "delivered", they resent me the same shirt for free.
- On my last order they took a big liberty with my measurements, the sleeves were really too large. I complained and they refunded me by voucher: the value of my order +20%
About this problem of the "tailor" taking unfortunate initiatives, after my complain, they add a note on my profil, telling that my measures should be respected precisely, even if they seems weird.
NB: I always use the measures of my "best shirt" in online tailors. The measure "on body" can easily vary by 10 or 20% depending on who takes the measure, I found this method too risky and random... and you can never know which margin the tailor will apply.