In the novel Taken at the Flood, Warmsley Heath is a small town in the county of Oastshire. It lies about thirty miles from London and three miles away from Warmsley Vale, where the Cloade family live.
- "Warmsley Heath consists of a Golf Course, two Hotels, some very expensive modern villas giving on to the Golf Course, a row of what were, before the war, luxury shops, and a railway station.
- Emerging from the railway station, a main road roars its way to London on your left – to your right a small path across a field is signposted Footpath to Warmsley Vale."
(in Taken at the Flood, Book I, Chapter One)
The town is described as a "mushroom growth" and despised by everyone who lives in Warmsley Vale.
Mr Mellon, Poirot's friend from the club, lives near the town and knows the Cloades. When the Detective reads about the crime commited in Warmsley Vale, he briefly meditates calling his friend. He abandons this plan immediately because Rowley Cloade calls on him in person.
When Poirot takes up residence at the Stag, Rowley Cloade suggests he would be better off going to a nicer hotel in Warmsley Heath, as the Vale is "a very one-horse sort of place". The Detective does not oblige him.