"And it is true that Travellers are massively over-represented in convictions for slavery, as the Independent article made clear."

Give me the statistics. I want to know the total number of CONVICTIONS (the word you used), the period of time they apply to, the nature of the offences, the number of convictions that apply to travellers and the criteria used by the authorities to define the convicts as travellers. Demonstrate this "massive over-representation" with numbers, please.