By Jess Jones Audioboom, the London-based podcasting giant, returned to revenue growth at the end of last year although its overall revenue was lower than in 2022. The firm reported revenue of $19.2m (£15.1m) in its fourth quarter of 2023, up 37 per cent on the previous quarter and up five per cent from the same quarter in 2022. In an update to markets on Monday, Audioboom said it hit revenues of $65m (£51m), compared to $74.9m (£58.8m) in 2022. Its average global monthly downloads dropped slightly to 110.1m the fourth quarter of 2023, from 110.9m in the same period the previous year. The comp…