Check if your local library offers ebooks and emagazines it might include The Economist. I am member of the Westminster Library here in London and they have The Economist for reading via RBDigital:

https://www.westminster.gov.uk/ebooks-emagazines-and-audiobo...

Have to admit RBDigital ain't the best reading experience but good enough to read The week and The Economist for free :)

I even have PressReader access so many magazines to read :))