I'm really sorry you're being made redundant, although on the upside, builders with any integrity I deal with are flat out.How is a sheep that is just left on a hill for a year worth £11 per kg? I wish my industry had subsidies. It doesn’t. I’m getting made redundant.
Perhaps you could go self employed...there's a world of work out there need doing.
As has been pointed out, the £11/kg you see in the shops is the retail price, and doesn't represent what we get for lamb.
Although if you think it is...go right ahead, rent a farm, buy a few hundred ewes (and I think £11/kg would buy you some pretty darn good ones! I'll sell you some almost as good for just half of that) ...no worries.