Fans took to social media tonight urging EastEnders bosses not to kill him off, but as the scenes are pre-recorded, their pleas may be too late.
Martin (played by James Bye) was presumed dead, but Max Branning (Jake Wood) suggested the able-bodied survivors should club together and lift the vehicle, freeing the former.
Looking bloodied and lifeless, he opened his eyes and called out for Stacey (Lacey Turner), saying: "I love you," before she replied: "No, don't say that!"
One viewer tweeted: “Swear to god @bbceastenders I will stop watching if you kill Martin. I'm begging you #EastEnders."
EastEnders bus crash: Fans threaten to BOYCOTT BBC soap if Martin Fowler is killed off
If Martin dies I'll stop watching because Stacey can't be a widow to two men.
"If Martin dies I'll stop watching because Stacey can't be a widow to two men," posted another.
A third said: "If Martin dies I refuse to watch EastEnders ever again."
“Killed off the only bit of totty in the show!, what a mistake to make, won’t bother watching now,”(sic) noted a fourth.
It is feared that the 747 double-decker bus driver is dead, while Mick Carter (Danny Dyer) suggested that Whitney (Shona McGarty) was also fatally wiped out in the accident.
EastEnders bus crash
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EastEnders bus crash: Fans threaten to BOYCOTT BBC soap if Martin Fowler's killed off
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Susan Tully played Michelle Fowler until she left for America in 1995, she is now played by Olivier Award-winning actress Jenna Russell
At the end of the dramatic instalment, he was seen looking around on hearing a phone vibrating underneath the wreckage.
"Pipe down. Pipe down," shouted Mick, before turning in slow-motion towards the bus, adding: "Whitney."
Having dropped the bus back down to the ground after pulling Martin out, some fans speculated that Albert Square residents inadvertently killed off Whitney.