Once you were able to speak to Nationwide's fraud team and explain this, it said it was happy with the clarification and removed the block on your account.

Source: https://www.dailymail.co.uk/money/saving/article-12413163/CRANE-CASE-Nationwide-frozen-bank-account-charitable.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Robert Gardner, Nationwide's chief economist, said: "There are signs that more buyers are looking towards smaller, less expensive properties, with transaction volumes for flats holding up better than other property types.

Source: https://www.coventrytelegraph.net/news/uk-world-news/14500-warning-issued-barclays-lloyds-27830621