A Manchester-based billionaire has tabled a £583 million takeover offer for Harworth Group, the AIM-listed developer that has spent two decades turning former collieries, steelworks and industrial wasteland across the North of England and Midlands into housing estates, logistics parks and employment sites. The approach, disclosed this week, values the company at a significant premium to its recent trading price and marks one of the largest take-private bids for a UK-listed property business since interest rates began climbing in 2022.