This was the form I filled out last summer for my pass:
https://www.truro-penwith.ac.uk/downloads/BUS_PASS_FORM_Autumn_2019-20.doc
Truro & Penwith College has no control over changes to normal service routes, or loss of routes, this responsibility does not lie with us, but we will make every effort to assist if this happens.
it also implies the pass is for the 2** series and other services are a complimentary add on and non contractual