X8 and X9 link Nailsea with Bristol city centre:
- X8 operates via Backwell and the Long Ashton bypass
- X9 operates via Wraxall and Long Ashton
The X8/X9 services run approximately every 15 minutes to Bristol on Mondays to Saturdays and the X9 operates hourly on Sundays and public holidays. Service X9 serves Wraxall every 30 minutes.