Flying to JFK at the end of October on business and our corporate travel agent has booked me a Z-class UC fare.. I don't need it at the NYC end as their service wasn't exactly fantastic last time I went but I would like to get the limo service on the UK side at both ends. Does anyone know if it's possible to pay for it? I had to pay £11 both ways as I'm a little over the distance limit but just wondered if anyone knew if it was possible before I ring them up.

Also, does that Z class bit hurt me anywhere else? Tier points, miles etc?

Thanks!

A