Hi hobby2015, thanks for your post.
What you're probably seeing now is Simple Delivery, Simple Delivery is basically a new automated shipping system, basically eBay picks the carrier and service for you, and you just send the item. If you click here, you can see more about it.
If you want Royal Mail, you can disable Evri and keep Royal Mail only as your carrier following the link provided in the other reply to this thread.
Thank you,
Marco
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