I looked back at some of the previous replies of time taken for people to get their route allocation. The list below is a couple of the many route allocation posts throughout the thread. As seen, the results vary quite a bit.
13 weeks - Route 1
10 weeks - Whitetail
10 weeks - <Good News?>
10 weeks - Whitetail
8 weeks - Route 3
6 weeks - Whitetail
3 weeks - Route 1
1 week - Route 1
"class of 24 at L3, around 14 are easyJet. New course roughly every 3 or 4 weeks." - User Statistic (2017)
"5/6 and one got route 1 and the other Route 2. Didn't hear of any others getting through" - User Statistic (2018)