The Polo Lounge shared a picture of the Line of Duty star, as he appeared to be all smiles at the famous queer club.
The picture appeared to be uploaded to Instagram by the city centre venue on Saturday.
The Greenock actor took to his own Instagram earlier in the evening as he posed with the Falkirk band, Brogeal, following their show in the city.
It comes as Martin is currently filming his new Amazon Prime series, Fear – which is being shot entirely in Glasgow.
We previously reported that the actor was snapped in the Park Terrace area of the city on March 20.