I think Dunstable in it's day was famous for hat making .
Following on from HT's discovery of Florence Turvey's employer I was curious to see how large the Kershaw company was. Looking at Florence Turvey's 1921 record, the employer code is 348, which corresponds to
Manufacture of clothing; Straw Hats (including straw plait). [Hat-related codes are 347-351]
I searched for:
employer code: 348
employer name: Kershaw
1921 location: Luton (5 mile radius)
and got 138 results.
Looking at a few records to confirm that what I was finding was reasonable. I immediately encountered families where one person might be employed at Kershaw's, but there were others employed at other straw hat manufacturers eg Mr Allen, Straw Hat Mfr.; Bates and Co. Straw Hat Mfr.; W. Slough and Sons; Mr A E Heley(?) Straw Hat Manufacturer; Mrs Jackson, Straw Hat Manufacturer. Even in the Turvey family, Florence's father Edwin was a blocker at the Crown Factory, Alfred Warren, Hat Manufacturer.
Just to get a feeling for the size of this industry in the district, I broadened the search by removing Kershaw, and got 8,686 hits. I checked ~15 of these and all were correct. So, yes, famous for hat-making.