After a quick chat with one friend it seems that some companies are playing a subtle game. Which is : ( numbers for easiness not real :-) )
Gross Salary : 10000/month
Bond: 2000/month
During the bonding period the gross on the payslip shows 8000...
Net paid ( after all taxes in ) 4000
Whatever happens and the bond has to be repaid ( reason very peculiar if you are still in the same company) THEN, Gross Shows 10000 net around 5200 Less the bond take home is 3200...
During the bond period HMRC "lost" money...who is clean ?
If you left the company..hmmm this will show on your final statement, and the exit option highlighted on you bond contract.