The late John Murphy founded the iconic Irish building firm whose dark green vans became a frequent sight on British roads. His Kildare-based son, Bernard Murphy (72), and his extended family now own J Murphy & Sons.
The three main companies, the principal one of which is working on some of the UK's biggest construction projects, booked 970m of sales in their last accounts, throwing off 40m in profits. The assets are worth at least 403m. Last year the main firm's CEO said it plans to grow turnover from 770m to 2.4bn by 2025.