You can get  to Chichester Bishop Otter campus;

1. By train. You can travel with Southern Railway and get off at Chichester or Bognor Regis station. Please make sure you seat in the first 4 front coaches of the train as the train splits at Three Bridges. Use Moovit or Trainline to check the timetable and book your ticket. 
2. By bus. If you’re coming to Chichester Campus (Bishop Otter or Bognor Regis) by bus, check the Moovit website for bus services and times based on your current location.
3. By car. Please consult Google Maps for the best route based on your current location. If you come down from London you’ll most likely take the A3 or M25 and A3.