Or he panicked. Or he was carrying something illegal. Or maybe the bike was stolen. Specialised (brand) e-bikes are £2200 - £5,500.The reason he’s legged it is possibly because he’s fitted it with a larger electric motor than is legal in the U.K.
In any case the cyclist made things worse. The police have the bicycle and arrested a suspect.
Turbo E-Bikes | Specialized.com