A Just Eat rider was spotted cycling through the Blackwall Tunnel in the capital which is banned.
The fast food courier pedalled along as cars went past at 30mph.
The tunnel under the River Thames links Greenwich with Poplar, both in east London.
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Cars are charged up to £4 and HGVs £10 to use it.
But the brave cyclist, with the Just Eat food bag on his back, went through on Sunday (8 Jun).
Locals reacted with shock at the rider.
One joked: “Risking it all for a lemon pepper 12-piece wing order.”
Another said: “Hope he paid the tunnel charge.”
Yet a third added: “That’s why I always tip.

“Salute.”
A fourth said: “Delivering to the other side of the river.”
The Blackwall Tunnel opened in 1897 and was open to horses and carts to increase trade to the East End, as reported on Need To Know.
It was doubled in size in 1967 to help congestion in the capital.

Cyclists are not allowed in the Blackwall Tunnel or the Silvertown Tunnel – which opened in April – for their own safety.
It was filmed on the dashcam of a vehicle travelling behind in a one-minute-and-29-second video.
A protest took place at the Silvertown Tunnel in April.
A Transport for London spokesperson said at the time: “Cycling is not allowed in the Blackwall or Silvertown Tunnel for safety reasons.
“A cycle shuttle service operates through the Silvertown Tunnel and offers a safe connection for cyclists through the tunnel between Silvertown and North Greenwich.”
TfL has been approached for further comment.
Just Eat and the Met Police have also been approached for comment.
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