Figures from the ONS:
Lowest ten per cent 6,760
Second decile group 13,000
Third decile group 17,680
Fourth decile group 22,880
Fifth decile group 28,600
Sixth decile group 34,840
Seventh decile group 42,640
Eighth decile group 52,520
Ninth decile group 66,560
Highest ten per cent 118,560
So if your profit is £28,600, half of all people are earning more than you, half less.
If your profit is £17,680, seven out of ten people earn more than you, three out of ten less.
Data from 2016. Doesn't include retired people. And it's gross household income so includes your other half's earnings (if any) and your other job as a fireman.
Vin