This Sunday, whatever the January weather , David Burton-Sampson will walk 4.5km in Belfairs Woods in his Essex constituency. It’s not a random distance – every kilometre will represent one of the years men die earlier than women in the UK. The MP for Southend West and Leigh will be walking in memory of his close friend who took his own life last year, just two days before his birthday. "My friend was a bubbly, charismatic, full-of-life person in his mid-30s,” David says. “And one day he