Santander have just launched a very attractive Regular Saver for anyone interested:
Santander Regular Saver 8% (incl bonus 5% variable)
£200/month
Withdrawals allowed
Any current account holders
The product is available in-app.
If you already have their current RS, you need to empty and then close through the chatbot to be able to upgrade. Once notification of closure is received, you can open the new one.
New customers can access the RS immediately.