By Elliot Gulliver-Needham Hargreaves Lansdown reported market growth and interest from cash push its assets under administration for the firm up to £142.2bn. Market growth pushed up assets by £7.2bn for the firm in the second half of 2023, compared to just £1.7bn in 2022. In the firm’s interim results, it revealed that revenue had jumped five per cent to £368.2m, though operating costs rose 24.7 per cent to a whopping £200m. The growth in revenue came mostly from net interest earned from cash kept in customer savings accounts, an issue that Hargreaves Lansdown has come under fire for in recen…