When I tried to do this the BA website says that this is a group booking and the group has to be booked in all together.

Have I been given the wrong reference or is online check in not available?

Many thanks

For BA we would check you in online 24 hours before your flight is due to depart.

If you call a friendly advisor here at JY with your reference number, then we can sort everything out for you.

Kindest Regards,

Amy