Here are some links to creative writing competitions currently running. Good luck!
Student:
https://fossewaywriters.wordpress.com/competitions/
https://www.ncl.ac.uk/ncla/competitions/young-peoples-prize/
https://www.hart-uk.org/get-involved/humanrightsprize
https://www.youngwriters.co.uk/competitions/shakeup-shakespeare.php
Adult:
https://www.dempseyandwindle.com/competition.html
https://fossewaywriters.wordpress.com/competitions/
https://alpinefellowship.submittable.com/submit/133506/af-2019-writing-prize