The BXP also has a part but by and large, it's the remainer parties, especially the LD, that won it for Bojo.
LD: +4%
Green: +1%
SNP: +1%
They account for 6% of -7.8% Labour vote loss. The BXP added the 2%.
Bojo did achieve tactical win but not necessarily through popular votes.
Remainers...