Police say the car - a red hatchback - was last seen driving north on Boston Manor Road toward the A4:
- Witnesses report seeing two white inside the car
- The car is described as being "dirty"
- Police say the vehicle would have damage to its front
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The impact of the 4mph crash pushed the buffers back by over a metre.
The 18-month-old puppy lives with owners Chris & Gillian French and their 10-year-old daughter Mia at the Mitre pub in Richmond-upon-Thames.
Detectives are hunting two suspects after the 23-year-old victim was left with a broken rib and a deep cut to his lung.