Thanks, yes the big bunny in the top section was the new addition but him and the other male aren't bonding as well as i'd hoped (the existing one is very territorial!). We therefore got a bigger hutch and attached run to accommodate him. They take it in turns to have free run in our garden also (as you can probably see, we've not much grass left!).
We are hoping to get a 4th if they don't bond to keep the other company. They are all rescue buns so they deserve to be a bit spoilt - past lives were not so great
Highly recommend Runaround and Ryedale Pet homes, not cheap but excellent quality and both very helpful