Table:
text: 1972 British Grand Prix
Classification
Classification
Driver Constructor_ Laps Time_Retired Grid
Wilson Fittipaldi Brabham - Ford 69 Suspension 22
Mike Beuttler March - Ford 69 + 7 Laps 23
Tim Schenken Surtees - Ford 64 Suspension 5
François Cevert Tyrrell - Ford 60 Spun off 12
Dave Walker Lotus - Ford 59 Suspension 15
Jacky Ickx Ferrari 49 Oil Pressure 1
Graham Hill Brabham - Ford 47 Spun off 21
Carlos Pace March - Ford 39 Differential 13
Jackie Oliver BRM 36 Suspension 14
Mike Hailwood Surtees - Ford 31 Gearbox 7
Dave Charlton Lotus - Ford 21 Gearbox 24
Nanni Galli Tecno 9 Spun off 18
Henri Pescarolo Politoys - Ford 7 Accident 26

Question: What were Mike Hailwood's highest laps while starting from a 7+ grid for the 1972 British Grand Prix?