I see E-Bikes Direct are selling the Czech Crussis bikes:
https://www.e-bikesdirect.co.uk/brands/crussis/
This model costs £1,599.99 and has a fully integrated 500Wh 14Ah Panasonic battery powering a Bafang MAX Drive crank drive motor (80Nm):
https://www.e-bikesdirect.co.uk/brands/crussis/crussis-e-largo-9-4-29er-electric-mountain-bike
https://www.e-bikesdirect.co.uk/brands/crussis/
This model costs £1,599.99 and has a fully integrated 500Wh 14Ah Panasonic battery powering a Bafang MAX Drive crank drive motor (80Nm):
https://www.e-bikesdirect.co.uk/brands/crussis/crussis-e-largo-9-4-29er-electric-mountain-bike