Okay let's say you work for Tesco and are on that 16k and the CEO of Tesco gets a whopping 50% raise, what law are you bringing in?
Let's say for arguments sake that the law was changed prior to this that the highest paid in a company could not be paid more than 50 times the wage of the lowest paid worker. Suppose the CEO was already maxing this out at £800k and you're saying he wants a 50% increase to £1.2m. Then, according to the law, he can only do that if his lowest paid is on at least £24k, so pay for the lowest earners will have to be increased accordingly. In reality it would probably work out as everyone receiving a much smaller bump.
The debatable things about the law would be the multiplier (50 above) and the ratio used (here min to max).