Transfer a Lamb from your England Farm to your Home Farm:
Before you can place a lamb on your home farm, you have to finish the quest your England Farm that gives you the sheep pen for the main farm. Otherwise the lamb will be in your giftbox and locked as ‘Only for England’.

When you finished the England quests and placed the sheeppen in your home farm, you can breed a lamb in your English Farm and choose for ‘Keep Lamb’, do NOT place it on your farm but

Click on the arrow ( Or just click on the X here, it will bring
the lamb to your Giftbox)

Go to your Home Farm

And place the lamb on your Home Farm

This is the Quest you have to finish before you can do this :

Here is a little video for the ones who are saying that it does not work (It is possible after completing the quest about the sheep pen for your homefarm, when you are on your English Farm it will say Locked because you are allowed to have 1 sheep pen on every farm, but if you go to your Home Farm, you WILL be able to buy one)