Doesn't matter how many trees we plant in the UK, it won't replace those lost worldwide every week.
I could car share to work every day for a year and still not put a dent in the emissions from a bunch of MP's flying across Europe to an Environmental meeting.
We could all stop eating beef/pork/lamb/chicken . . . and then spend millions on high emission equipment needed to plough & sow the fields, and then harvest the vegetables required to feed everyone.
. . . or we could invest in floating farms/villages for when the floods come