Yeah def get multiple bank accounts if you can and spread your btc transactions. Although i found out my banks created a centralised AI surveillance entity where they collected all the transactions from my  banks in one database. Horrifying and in flagrant violation of fundamental human rights imo. 

Maybe have a look at a Xapo bank account. They have been using bitcoin for over 10 years… Should be available in the UK.

I can dm you a referral code if you like which can help you get onboarded there.