Someone also requested for me to do a top 30 busiest single decker routes so here it is (rounded):
1. Route 235 - 3.72 million (+1)
2. Route 170 - 3.65 million (+2)
3. Route C10 - 3.41 million (+5)
4. Route W15 - 3.40 million (-3)
5. Route 195 - 3.39 million (-2)
6. Route 316 - 3.27 million (=)
7. Route 276 - 3.17 million (-2)
8. Route 450 - 2.97 million (-1)
9. Route 80 - 2.82 million (due to be fully converted) (+11)
10. Route 358 - 2.81 million (+11)
11. Route 214 - 2.77 million
12. Route 108 - 2.76 million
13. Route 366 - 2.76 million
14. Route 112 - 2.73 million
15. Route 184 - 2.66 million
16. Route 46 - 2.65 million
17. Route 355 - 2.64 million
18. Route 493 - 2.61 million
19. Route C11 - 2.60 million
20. Route 236 - 2.60 million
21. Route D6 - 2.59 million
22. Route E6 - 2.53 million
23. Route 181 - 2.47 million
24. Route 151 - 2.46 million
25. Route 289 - 2.45 million
26. Route 226 - 2.44 million
27. Route 70 - 2.42 million
28. Route 192 - 2.41 million
29. Route W4 - 2.41 million
30. Route H37 - 2.40 million
If this list didn't include routes that have used DD buses, after H37 would be 410, following that would be 244,39,33,95,490,232 and 227.
Top 30 busiest night route single deck...... oh wait.