Our popular Photomarathon returns! 6 HOURS | 6 TOPICS | 6 PICTURES | 1 CITY 'A photography competition with a difference' Tickets in Advance: Adults - £10 Students - £8 Under 18’s - £5 CLICK HERE TO BOOK YOUR ADVANCE TICKET NOW  On the Day: Adults - £12, Students - £10, Under 18’s - £7 Registration from 9:00am | Photomarathon starts at 10:00am *Free Plymouth Citybus dayrider tickets for the first 50 entrants and a free snackbox at the halfway…