Has the sign at the entrance to the bus station been changed since Bing's street side imagery was last updated?

If it's still "motor vehicles prohibted, except for buses and access" (TSRGD diagram 619), then it's:
motor_vehicle=destination + bus=designated
Those are the only tags required, access=no + bicycle=yes + foot=yes aren't really necessary.

https://www.bing.com/maps?cp=51.44498%7E0.369115&lvl=22.0&mo=om.1&pi=-6.9&style=x&dir=333.5