Powells Cottages are in Long Lane and are still standing. I doubt you will get any history on them though. If you are looking for a picture of them now they can be seen on online maps, they are a row of 4 cottages next to the junction of Long Lane /Short Lane and opposite the recreation ground.
Spout Lane is at the other end of Stanwell, virtually opposite Heathrows terminal 5

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Thanks KG for the link where I see Jane and I have already posted about the Powell family. No wonder I did not remember as that was 7 years ago
