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4 comments
SK53

@alan @vespucci_editor Also back in 2018 mapping of hairdressers in the UK 🇬🇧 was, if anything accelerating: sk53-osm.blogspot.com/2018/07/. Second only to convenience stores then, but fast catching up now (26k vs. 30k).

#OpenStreetMap #RetailMapping #hairdressers #AccumulationCurves.

Graphs showing number of shops mapped over time on OpenStreetMap in the UK to mid-2018. The graphs represent the most popular shop=* values at this time.
SK53

@alan Looks like we only have ~50% mapped in the UK 🇬🇧. Rule of thumb from Nottingham figures suggest 1 hairdresser per thousand people, which gives an estimate of roughly 60k (assuming under 5s don't use them), which is close to figures here nhbf.co.uk/documents/industry-

SK53 replied to SK53

@alan the other approach is bavk-of-the-envelope. If we assume 60 million customers getting hair done 4 times a year and taking 20 minutes, we get 80 million person hours or roughly 50,000 FTEs. Obviously very conservative values, but given most salons are sole traders it gives a reasonable approximation.

I'm now going to have to get my hair cut so I can interrogate my hairdresser about her customer mix.

SK53 replied to SK53

In summary: ways to estimate country totals for POIs:

* Official statistics (e.g. VAT registered businesses)
* Govt #OpenData (e.g., UK Food Hygiene)
* Trade bodies & trade journals
* Extrapolation from well-mapped places on #OpenStreetMap
* Ball park estimates from first principles with a bit of introspection.

MT @alan

In summary: ways to estimate country totals for POIs:

* Official statistics (e.g. VAT registered businesses)
* Govt #OpenData (e.g., UK Food Hygiene)
* Trade bodies & trade journals
* Extrapolation from well-mapped places on #OpenStreetMap
* Ball park estimates from first principles with a bit of introspection.

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