Conventions to sell سٹار, ستارہ trek collectables uk 2016

Hi I have been keeping lots of collectables from سٹار, ستارہ trek most boxed excellent condition comincs کتابیں games figures ships uniforms phasers rank insignia rare pc games board games enterprise dedication plaque from tv دکھائیں
i was hoping to sell at a conversation in uk this سال for 50th anniversary but can not find anywere please help
Debbie