A statement from Pocklington Arts Centre, which organises the event, said: "The safety of our audience members, artists, staff, volunteers and wider community has to come first and we did not want to put additional pressure on the health and emergency services at this time.
"Platform is a labour of love, for PAC staff, and being unable to share it with you all in the venue's 20th anniversary year is heartbreaking.
"It is of course the choice we had hoped we wouldn’t have to make; we looked at the possibility of staging the event at a later date this year but the most important thing for us other than your obvious safety, is to give our customers certainty and so we have therefore made the decision to move this year’s festival to July next year
" Platform is nothing without our audience, you make it the great festival that it is. We want to thank you for your patience, support and understanding with us, whilst we have been working to reschedule the festival for you.
"If you have already booked your tickets, rest assured these are secured. You will be offered the choice of a refund or the chance to hold onto your tickets for the 2021 edition. We plan to carry as much as the programme, as possible, forward and so far, almost all artists have agreed to work with us on this, which is amazing.
"We will of course keep you updated and we hope to have this all finalised in the coming weeks. Please be patient and wait to hear from us – our box office (and external ticket agencies) is extremely busy and we will contact you in due course."
Platform 2021 will take place from July 21 to 27
If you are in a position to support Pocklington Arts Centre and Platform Festival, it has set up a crowdfunding page here