Now anyone who knows me knows I don't like dolts, but I don't think you are a dolt, unless you keep beating yourself up. So knock it off!
They look like nice birds and I think they are two roos and a hen , due to the thickness of the legs. The white being the hen. Sex is not something that even the experts can determine early on. As for breed the UK has different breeds than we do here in the US so I can't really tell.
If you can't have roos, sell or give them away and try again. If you can find a friendly farmer you may get what you want. If you can have roos keep the one you want and do with the other what you will.
Wishing you the best
Rancher