(21 Apr 2022, 8:15 pm)Storx wrote Yeah, might be other's that are busier now mind as Covid has messed everything up, the X1 will be up there too. The 21 is a right chore of a route though as it usually stops at every stop, similar with the 308 tbh. Try to avoid both personally if I need them.

I would be very surprised if the X1 made much money via its fare box though. Despite any popularity it might have.
The nature of its route and having to rely on other services to feed it in places like Houghton and the Galleries, must impact on its traditional fare structure and the revenue it takes.

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(21 Apr 2022, 8:29 pm)Unber43 wrote 1.) 21
2.) X1
3.) 10/10A/10B
4.) 20
5.) X45/X46
6) X21
7) 309/10/11
8) 60
9) 56
10) 47/47A 

I am pretty sure the X66 would be 3rd. 

Again, like the X1, it's not going to take much in the way of fares.