Spencer, 26, enjoyed afternoon lunch and drinks with his friends at a bar in Chelsea and even former MIC star Francis Boulle stopped by!
Birthday boy Spencer, who was also joined by two girls, was all smiles as he chatted to his friends around the table.
Spencer's best mate Hugo Taylor even joined in on the celebrations later on, ended up giving Spenny a birthday kiss!
Posting a photo of the pair on Instagram, Spencer simply said: "Birthday kiss from @hugotaylorlondon."
Hugo, who left MIC after the third series in 2012. had earlier sent out a public birthday message to Spencer.
He said: "@SpencerGeorgeM happy birthday my man. Growing older is part of life: growing up is entirely optional. Love, life and happiness always."
Earlier in the day, Spencer told fans that he was "now officially old" after turning a year older.
Spencer, Jamie and co will be back on our screens on Sunday 10 August at 9pm on E4, when the new series of Made In Chelsea: New York kicks off. We can't wait!
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