Wood will take voluntary redundancy later in the year after 11 years at the firm. She joined Sainsbury's in 1998 initially as head of press and was promoted to her current role in 2004.
Wood told PR Week that she does not yet have her next role lined up, but will look to take part-time or interim work and devote more time to her family.
‘I've been wanting to take my foot off the gas a bit and spend more time with my children,' she said. ‘I'm sad to leave, but excited about new challenges and of course looking forward to a change in pace.'
At the supermarket Wood oversaw consumer and corporate comms, media relations and PR around Sainsbury's property portfolio.