At first glance, 201 Whitechapel Road is a pleasant Victorian building but not of particular interest. However, above each first-floor window is a painted sign: Bedding, Bedsteads, Feathers, Flocks.
The building has a long past as a clothing shop, not unusual for this area. In 1871 it was a hosiery and menswear shop; in 1982 it housed a wholesale clothing manufacturer. Today, it is a retail clothing shop again. However, our signs presumably mark a break in such usage, since woollen flock was used to stuff mattresses: combined with bedding and feathers, it suggests that the shop sold not only bedsteads but also the mattresses and pillows to go with them.
In researching this post, I came across a lovely resource: Panorama High Street East, which has photographs of the length of Whitechapel Road and beyond, combined with all sorts of information on each building. It's a lovely way to explore this stretch of the East End!