Plenty of Uber taxis seem to park up in the area between the Punchbowl Pub and the Hilton T5 on Poyle Road, it's not a residential street. By the Punchbowl there is the 81 bus towards Hounslow (you would have to change again for T3) or the 5 towards T5. No guarantees as to the wisdom or otherwise of this, I would imagine there would be better public transport options open to you than this, depending on where you are starting from.