An expedition with 10 or more passengers can be arranged easily on British Airways. But to make it, flyers must adhere to its rules. Moreover, the rules for British Airways group travel are mentioned below.

All the passengers are required to travel together under one reservation credentials.
If booking is made more than 44 days before the flight departure time, then the deposit should be made within 2 weeks.
If booking is done within 30 to 44 days, then the deposit should be made at the time of approval.
The final payment for the flight ticket must be made 30 days before the scheduled journey date.

For more information about the group booking process and the guidelines of British Airways, flyers can read the blog mentioned by Group Travel Airlines.

Read more: https://www.grouptravelairlines.com/flights/british-airways-group-travel-bookings