For Diaspora viewers, some cinemas in London (Cineworld), Toronto, and Sydney occasionally screen Sinhala films during Poya weekends or Sinhala New Year festivals.
The most comprehensive legal source. Dialog's PEO TV platform allows you to rent or buy digital copies of almost all Sri Lankan films (from Rosa Kale to The Game). Sinhala Films Download Websites
The industry is at a crossroads. With the success of local films like Gaadi and Ahinsa (which held special screenings for expats), producers realize the diaspora is a lost revenue stream. For Diaspora viewers, some cinemas in London (Cineworld),
We are likely to see a "Sinhala OTT" platform emerge within the next 3-5 years—a localized service similar to India's Hotstar—where for Rs. 499/month you can stream unlimited local films. Until then, the temptation to use Sinhala films download websites will remain high. The industry is at a crossroads
If you want to support the local industry (and avoid viruses), these are your best options.
For older Sinhala movies and tele-dramas, official YouTube channels are the best source.