A couple of questions :
Both Northern Tribes and British Tribes have light cavalry at 18pts which can be fielded as skirmishers at 16pts. The northern tribes can substitute a javelin for their spear, but this option is not given for the British Tribes. Is there any reason for this, or should the British tribes light cavalry also have this option?
Do the British Tribes light cavalry need to be in skirmish formation to count as escorts?