Someone was testing?

This is not really a data issue, rather a heads up against potential hacks. I see there is a company, now dissolved, number 08804157, whose name (without escape characters) is:
SAFDASD & SFSAF \’ SFDAASF" LTD

It is fairly safe to say that this company never did any real business! What they may have been trying to do is crash your system by using the escaped backslash and double-quote characters.

A good find! There have been odd companies that seem to have snuck in (e.g. Company 10597542 ). It’s a good reminder to check validation / parsing too (various characters “”, “&”, quote etc. appear in company names e.g. 05060411, 07881928, FC004087).

Here’s another: https://beta.companieshouse.gov.uk/company/10542519

Thank you for your concerns, but these company names do not cause us any problems.