Aaron Collis, 28, was jailed in 2009 for abusing a total of 22 children - with his youngest victim being just 18 months old.
The paedophile, who is also a father-of-two, wrote a pleading letter to the newspaper 'Inside Time' asking that he be allowed to be castrated.
Chemical castration involves administering medication that reduces libido and therefore sexual urges. It does not involve the removal of any body parts, nor does it sterilise the individual permanently - it simply works for as long as the drugs are taken.
Collis claims that any other treatment programme 'won't make a bit of difference' and he needs to procedure in order to be rehabilitated.
In 2012 approximately 100 paedophiles were chemically castrated under a voluntary Government scheme to stop them reoffending.
'I am only speaking for myself because I know my own ming, I know my triggers and I know that the SOTP [Sex Offenders' Treatment Programme] alone is simply not going to lower my risk' says Collis.
He added that despite discussing his desire with medical experts, doctors were unenthusiastic about the procedure.
'I thought they would jump at the chance to take away my sex drive, but I was very wrong.'
'I'm sorry, but it's my body and my messed up brain which is dangerous and this is my decision.'
'They all seem to be trying to talk me out of it, telling me I'm young and it's not necessary.'
'Well, I'm sorry, but it's my body and my messed up brain which is dangerous and this is my decision. I'm not going to let this go, even if I have to go to the European Court of HUman Rights. I will be a free man in a few years and this is a huge factor in deciding how bright my future will be.'
Collis was given an indeterminate sentence, with a minimum of five years back in 2009.
The 28-year-old worked at two nurseries in Chesterton and Abbey, Cambridgeshire, but apparently did not offend at either of his workplaces.
Chemical castration is mandatory in Poland, Russia and some U.S. states, and has been used in Britain before.
According to statistics, it cut the rate of reoffending from 40% to just 5%.