Hello @Matt_Hunt, welcome. Sorry to hear of your problem, I’ve just checked and the BBC stations1, 2, 3 and 4 all look OK to me.
Can you give us some details of your setup please, use this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so they can have a clear understanding of how your devices are communicating.
I’m particularly interested in what core you are using.
Can you play the BBC stations through another endpoint?
Can you play other stations?
Has anything changed in your setup?
And - because it often helps - have you rebooted?