Where to watch William Sierra in the UK
Find every William Sierra film and TV show streaming, free, or available to rent in the UK. Updated daily — verified 19 August 2026.
William Matthew Sierra is an American former professional wrestling referee and manager better known by his ring name Bill Alfonso. He achieved his greatest success in Extreme Championship Wrestling in the mid-to-late 1990s. He is well known for the whistle that was almost always hanging around his neck, which he blew constantly during his wrestlers' matches In May 1995, he made his debut in Extreme Championship Wrestling as a "trouble-shooting referee".Introduced by Shane Douglas, he angered many ECW fans with strict enforcement of the rules and disqualifications of wrestlers for such ECW tra…
William Sierra films streaming in the UK
Most-watched films featuring William Sierra, available across UK streaming, rent and buy.
William Sierra TV shows streaming in the UK
Selected TV credits featuring William Sierra.
Full filmography
Every credit ScreenSearch indexes for William Sierra, ranked by popularity. Click any title for UK streaming, rent and buy options.
- Raw (1993) as Bill Alfonso
- WWF Wrestling Challenge (1986) as Bill Alfonzo
- Mid-Atlantic Championship Wrestling (1981) as Bill Alfonso (Referee)
- ECW Big Ass Extreme Bash 1996 (1996) as Bill Alfonso
- ECW Hardcore Heaven 1995 (1995) as Bill Alfonso (Troubleshooting Referee)
- ECW Holiday Hell 1995 (1995) as Bill Alfonso (Manager)
- WWE: Undertaker 20-0 - The Streak (2012) as Bill Alfonso - Referee (archive footage)
- Battleground Championship Wrestling (2021) as Bill Alfonso
- ECW November To Remember 1998 (1998) as Bill Alfonso (Manager)
- ECW Barely Legal 1997 (1997) as Bill Alfonso (Manager)
- WWE: Blood Sport ECW - The Most Violent Matches (2006) Cast
- ECW: Extreme Evolution (2000) as Bill Alfonso (Manager)
- ECW: Bloodsport The Most Violent Matches (2006) as Bill Alfonso
- ECW CyberSlam 1999 (1999) as Bill Alfonso (Manager)
- ECW CyberSlam 1996 (1996) as Bill Alfonso
- ECW A Matter of Respect 1996 (1996) as Bill Alfonso (Manager)
- GCW: Joey Janela's Spring Break X (2026) as Bill Alfonso
- WWE Bashed in the USA (1993) as Bill Alfonso
- Battleground Championship Wrestling Presents ECW Reunion Show: A Tribute To The Extreme 2 (2024) as Bill Alfonso
- ECW Anarchy Rulz 1999 (1999) as Bill Alfonso (Manager)
- ECW Heat Wave 1997 (1997) as Bill Alfonso (Manager)
- ECW CyberSlam 1998 (1998) as Bill Alfonso (Manager)
- ECW Sunshine State Slaughter (1995) as Bill Alfonso (Troubleshooting Referee)
- ECW High Incident (1996) as Bill Alfonso (Manager)
- ECW: January 27, 1996 (1996) as Bill Alfonso (Appearance)
- ECW November to Remember 1997 (1997) as Bill Alfonso (Manager)
- ECW House Party 1999 (1999) as Bill Alfonso
- ECW Wrestlepalooza 1998 (1998) as Bill Alfonso
- ECW Big Apple Blizzard Blast (1996) as Bill Alfonso
- MECW Inaugural Show (2001) Cast
- ECW Born To Be Wired (1997) as Bill Alfonso
- ECW The Doctor Is In 1996 (1996) as Bill Alfonso
- ECW November to Remember 1995 (1995) as Bill Alfonso
- WWE Bloopers Bleeps and Bodyslams (1994) as Bill Alfonso
- ECW November to Remember 1999 (1999) as Bill Alfonso (Manager)
- ECW Guilty as Charged 1999 (1999) as Bill Alfonso
- ECW House Party 1996 (1996) as Bill Alfonso (Manager)
- ECW November to Remember 1996 (1996) as Bill Alfonso
- ECW Massacre on Queens BLVD (1996) as Bill Alfonso (Manager)
- ECW Wrestlepalooza 1997 (1997) as Bill Alfonso (Manager)
William Sierra — FAQ
Where can I watch William Sierra films in the UK?
William Sierra's films and TV shows are available across UK streaming services. Click any title in the filmography below to see exactly which UK service has it — Netflix, Amazon Prime Video, Disney+, Apple TV+, BBC iPlayer, ITVX, NOW, Sky, MUBI and more — updated daily.
What are William Sierra's most popular films?
Most-watched William Sierra films currently: ECW Big Ass Extreme Bash 1996 (1996), ECW Hardcore Heaven 1995 (1995), ECW Holiday Hell 1995 (1995), WWE: Undertaker 20-0 - The Streak (2012), Battleground Championship Wrestling (2021).
What TV shows has William Sierra appeared in?
Selected TV credits: Raw (1993), WWF Wrestling Challenge (1986), Mid-Atlantic Championship Wrestling (1981).
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