Just what I was after.  If you’ve ordered a firm mattress then it’ll be firm. I was after a mattress that didn’t concave in the middle and this one certainly doesn’t. It’s very supportive, feels and looks well made. 
It’s really good value for a mattress for what I’ve received. 
The delivery was great too. Two guys turned up. Nice and polite, they took their shoes off and took it upstairs to the room of choice. 
Next day delivery, perfect mattress and a superb delivery. Not one thing I can say that needs improving. 
I’d recommend 100%