Kind of, the Leicester supply chain is mentioned (p. 6), however they do not use the phrase 'modern slavey' in relation to it. They also mention the threat to Uyghur human rights (p. 9).

They do not explicitly mention a modern slavery incidence but I have left Yes as the answer because:

The emergence of allegations about poor labour standards and wages in our supply chain was therefore extremely concerning and in complete contradiction to our team's values. (p.2, aug 2021)

Following the very serious allegations of health and safety and wage concerns in the UK garment manufacturing industry in the summer of 2020 we accelerated this programme of work and commissioned an independent review by Ms Alison Levitt QC. (p. 5, feb 2021) "In response to the supply chain allegations in July 2020, the Board commissioned an independent review (p. 5, Aug, 2021). Our third party partner tailored their approach to a ‘focused assessment audit’ to address the most severe allegations raised, notably wages and health and safety. (p. 5, Feb, 2021).