Although there are tax accounting differences between a sole traders and limited companies, the largest difference you’re likely to encounter is if the business has financial worries.
A limited company is legally separate from its owners, and has a larger selection of formal insolvency options available to it; all of these have no immediate effect on its directors or shareholders personally.
For a sole trader, however, in the eyes of UK company law, personal assets and liabilities are treated the same as business assets and liabilities. This means that any business debt is personally owed, and is recoverable from personal assets.