The reality star threw a massive bash at his Luxe venue, which was shown on Wednesday night's episode of the ITVBe show.
Lockie was going head-to-head with co-star Tommy Mallet, who was throwing a party the same night at his Circuit club, meaning the cast all had to decide which bash to attend.
Speaking to the official TOWIE website afterwards, Lockie said he was happy how his night had gone… but wished Arg and Mario had turned up.
"I am a little bit disappointed in Arg but I won't hold grudges. I'm too old and mature to hold grudges. I am disappointed in Arg. And I don't know what happened to Mario, he's meant to be here.
"I will confront them and see what happens. It is what it is. On the whole, I'm proud of what happened and everyone who has come."
Guests at Lockie's night included his girlfriend Danielle Armstrong (obvs!) and co-stars Ricky Rayment, Chloe Sims, Elliott Wright, Jasmin Walia, Vas J Morgan, Fran Parman and James 'Diags' Bennewith.
Returning star Frankie Essex also made an appearance.
Meanwhile, over at Tommy's night, we saw his girlfriend Georgia Kousoulou, alongside Lewis Bloor, Jess Wright, Ferne McCann, Gemma Collins and Chloe Lewis.
Lauren Pope DJed and Arg was also in attendance. Naughty Arg!
Obvs, Lockie realised where Arg had been while watching the show and jokingly tweeted at him: "What's u doing @CircuitEssex @RealJamesArgent #Traitor."
TOWIE airs Wednesdays and Sundays at 10pm on ITVBe.
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