A bit of digging on Google Street View shows the address to still be a rather old-fashioned looking building with large 'shop'style' plate-glass windows, now with net curtains behind.
Also I found:
5th July 2017 Property sold for £240,000
This Terraced property is a Non-Newbuild and is located at 20 Wellington Street, Ely CB6 1PN. The most recent sale for this property was recorded on 05/07/2017 for £240,000. The earliest sale for this property was recorded on 05/07/2017 for £240,000.
And it appears to be on sale with planning permission:
https://www.pocock.co.uk/property-de...t/littleport-9
I wonder what happened to the business? That there's no evidence of there ever being a website makes me think they probably ceased trading some time in the early 1990s. The lack of any trace of a website might explain why!