In that time, the shares have risen 750 per cent as the Swedish businessman transformed it into the fifth largest company on the London stock market with a value of £73billion.
The company's success has proved hugely lucrative for Engstrom, 61, who already owns around 1.2m shares worth approximately £46m.
Relx is worth more than oil major BP and is around twice the value of defence giant BAE Systems and bank NatWest.
Analysts believe that Relx will say that its profits rose 19 per cent to £2.7billion last year as revenues climbed from £9.2billion to £9.5billion.
A source close to the company said that given the job he has done, investors were happy for Engstrom to be among the best-paid executives in the country.
