If you want to busk you can, but you do need to be prepared to move along if anyone happens to complain. For example, if you are at the entrance to a business and they think it’s impacting their custom.
N.B. You must adhere to Government guidance and law regarding Covid. For information: www.centralbedfordshire.gov.uk/info/135/coronavirus/896/national_lockdown_stay_at_home
If you are also selling your CDs however, you will need a trading licence which can be obtained through Central Bedfordshire Council If you are not selling yet accept donations, think before recommending a donation level as it gives a price which may be interpreted as trading.
If you want to busk for fundraising purposes in the High Street you will need permission first from Central Bedfordshire Council