Thanks for your reply.

I've been buying recently, the Queen's beast coins and seen their value rise quite significantly compared to say the Britannia ones- also gold sovereigns.

Apart from Atkinsons bullion, I buy from Bleyer:

https://www.bleyerbullion.co.uk/

I spoken to them many times and they are very friendly and cooperate etc. I think if you contacted them they would give you a discount code. Hope this helps!