Thousands of clients of the UK financial services giant Hargreaves Lansdown have reported problems logging into digital services and making transactions.
The Bristol-based company, which manages private investments for two million people, has confirmed there are "technical issues" affecting their website and mobile app.
In a statement on Friday morning the company said this was impacting the ability to perform account transactions but said clients' assets and data were "secure" and there was "no evidence of any cyber incident data breach".
According to website Downdetector, which monitors web outages, thousands of people have reported problems since the disruption began on Thursday evening.
In a statement on X the firm, has apologised for the inconvenience caused and pledged to get its services working fully again as soon as possible.
