
Ranking: 29
Worth: £277m (420m)
Industry: Hotels
Mansfield, 68, assesses his leisure complexes and Weston Aerodrome outside Dublin at more than £274m. If rezoned for housing, he could make three times more, but we stick to a cautious valuation. Sons Anthony, 41, James, 39, and Patrick, 30, run his £3m Truck & Machinery Sales and HSS equipment businesses.
Ranking: 23
Worth: £267m
Industry: Hotels