Briton Participates in Death Penalty

I'm appalled to read that Briton exports the drug used to execute prisoners in the USA,  if this is true, then something needs to be done to ban the selling of this drug abroad. The only company that produces and exports this substance is Archimedes Pharma UK whose headquarters is in Reading.
Capital punishment was outlawed in this country and rightly so, in my lifetime, so I don't wish to be part of a civilised society that on the one hand cherishes life, whilst on the other participates in executions. Pass this knowledge on.