Thats £62.50 / man-hour - Any GA MOs really charging that amount??
No, I don't think you will find a GA MO (here in Germany at least, but the UK has the same level of prices/cost) that only charges the equivalent of 62 GBP. That would be the hourly rate of a typical car maintenance garage (not Mercedes or BMW though).
Aviation? Not below 100Euros/GPB per hour...