In case this is of any interest to anyone here:
hgwellscompetition.com
As the name suggests, it's open to science fiction, from 1500-5000 words. It charges an entry fee, unless you're under 21 though. Open until 8th of July.
The HG Wells Short Story Competition
The annual HG Wells Fiction Short Story Competition offers a £500 Senior and £1,000 Junior prize and free publication of all shortlisted entries in a quality, professionally published paperback anthology.

As the name suggests, it's open to science fiction, from 1500-5000 words. It charges an entry fee, unless you're under 21 though. Open until 8th of July.