The companies that are likely to be the hardest hit is firms that specialize in private hires and excursions as companies are having their trips cancelled already with likely more to come if the outbreak gets any worse anywhere, some will have scholars to fall back and maybe some service work but if there's little to no income then I can see many more independents having to shut up shop.
Rail and air travel is also likely to take a hit due to decreased patronage and cancellations.
Coronavirus and the public transport industry.