Everybody’s favourite rag, The Sun, reports
Tommy, 26, was pictured carefully preparing the roll-up before taking deep drags seconds later.
But the photos are unlikely to bother his Labour leader dad, who called for the drug to be decriminalised 19 years ago.
Tommy was spotted with a pal at a cafe in Notting Hill, West London.
In photos, he is seen using a Julian Marley Juju Royal grinder before carefully tipping green leaves into rolling paper.
He then sealed it, lit it and puffed away.
The snaps emerged as Tommy prepares to cash in on “cannabis culture” by launching his own hemp businesses.
He has set up two firms with girlfriend Chloe Kerslake-Smith, 25 — National Hemp Service and The Hemp Cafe.
Revealing his plans last year, Tommy wrote online: “Watch this space…#WeedIsGood.”
And on Twitter last month he said he hoped both businesses would open in North London “very soon”.
Last night a friend said: “What Tommy was smoking is legal under UK law and is what his shop will be selling.”