There is a significant difference between the number of male and female deaths. However, I believe those figures are based on statistics from China (and maybe Italy). The hypothesis is that men in China tend to have unhealthier lifestyles eg. smoking. Very few Chinese females smoke. AFAIK the UK has not published statistics differentiated by gender.
The issue in the UK is that most key workers are poorly paid and in insecure jobs. It's impossible to be a care worker, supermarket worker, warehouse packer, etc. from home, whereas most white collar and senior jobs can be done in front of a computer at home.
Moreover, many people in low income/insecure jobs carried on working for longer than was wise because they were more worried about loss of income. They are also more likely to use informal childcare arrangements (eg. grandparents).