I bought the Southern Cross ladies' lace-up boots in size 8 but it was really big and really heavy. I emailed WorkwearHub to exchange for 7.5's and what a world of difference half a size made! The shoes fit perfectly and are light as a feather (maybe because I wasn't lifting my foot that extra little bit on each step to not trip over myself in the larger size). The toe area is very ROUND allowing for your toes to wriggle around in comfort even with thick socks. It's also good for anyone with bunions.
The customer service was AMAZING. Because I spent over a certain amount, I got free delivery and inside the parcel there is already a returns label, should you need a return, just stick it on and take it to the post office! And post it back to WorkwearHub for free. It was totally worth it to get the right size in these as I will be working in them for long hours and although I'm not a fussy person, the exchange experience was processed very quickly and came a whole week before the promised date. The shoes are true to size for ladies. If you are not sure, go with your European size on the chart as I am a European 39 and the 7.5's were exactly that.