PA Media interview with David Parfett, father of philosophy student Thomas Parfett, who died aged 22 in Sunbury-on-Thames, Surrey, after harrowing details of the deaths of a Canadian poison seller's UK victims have been read to a court.

PA Media interview with David Parfett, father of philosophy student Thomas Parfett, who died aged 22 in Sunbury-on-Thames, Surrey, after harrowing details of the deaths of a Canadian poison seller's UK victims have been read to a court.