Yes, with a valid National Railcard you will get 1/3 off the adult price of a PlusBus day ticket (Railcard discounts are not available with any season ticket, as the price of seasons is already heavily discounted).
Railcards which offer the discount:-
- 16-25 Railcard;
- 26-30 Railcard;
- Disabled Persons Railcard;
- Family & Friends Railcard
- HM Forces Railcard;
- Network Railcard (or Gold Card equivalent);
- Seniors Railcard
- Two Together Railcard (you must buy 2 tickets together)
Please check the Railcard use restrictions.