§ Mr. Arthur Lewisasked the Secretary of State for the Home Department whether he will undertake a study of adopting a system of indelible dye spray water hoses to be used against those persons who deliberately cause riots and disorders, so that the authorities will have the opportunity of marking those responsible or who fail to withdraw when ordered to do so.
§ Mr. WhitelawNo. I do not believe, nor, so far as I am aware, does any chief officer of police, that such a study would materially assist the poice in maintaining order.