Why did Merseytravel pay for flights to Tokyo costing £4,357.92?

Why did Merseytravel pay for flights to Tokyo costing £4,357.92?                                               Merseytravel invoice Key Travel £4357.92 flights London to Tokyo April 2016 Invoices exclusively published on this blog show that Merseytravel spent £4,357.92 on British Airways return flights from London (Heathrow) to Tokyo (Narita) travelling out on the 16th May 2016 and returning on…