Recently spotted on a 19thC house in Linscott Road in Lower Clapton was this iron bay window pillar/support column. Unusually it had been left unpainted after a century of paint had been removed and so by chance a brand could be seen on it, ‘WELLS COMP’.

There is nothing online refering to any ‘WELLS COMP’ but this is almost certainly a product of Wells and Co of Shoreditch and the ‘&’ may have been lost.
Wells and Co were a ironmongers based at 125-130 Shoreditch High Street, known nowadays for their highly decorated old showrooms and works opposite St Leonards and Grade II listed [1]
Susan England in Hackney Today stated “Edward Wells & Co was a wholesale ironmonger. At a cost of £8,651, the building was designed for the company by architects Fowler & Hill, and built by W Crockett of St Pancras as a showroom, factory and shop.” [2]
The building was “in an eclectic design with Gothic and Moorish Details in a variety of materials including polychrome brick, stone, stucco, mosaic and wrought iron.” [3]

The title across the 4 linked buildings states “WELLS & COMPANY COMMERCIAL IRONWORKS”. Victorianweb states “Wells & Co. were cabinet ironmongers and this was their purpose-built foundry and showroom” [1] though it is not clear where the foundary or ironworks itself was. Wells also had the railway arches behind so maybe here. [3]
The building seems to have been built in 1877-80 but there are differents suggestions as to the architect.

There is an inscription on a large granite upright stating “Contractors to HM Dockyards, Metropolitan Board of Works, Corporation of London School Board.” It feels the lower one should have something too but there is nothing. [4]

The houses with the iron columns on Linscott Road were built after 1882, on a new road leading to the portico of the Salvation Army’s National Barracks. The portico, which is all that remains of the Orphan Hospital, dates to 1823, and was surrounded by parkland but after the Salvation Army bought the building the surrounding area was developed. [5]
And that date fits very neatly into the builder having obtained the columns from Wells & Co in Shoreditch.
Indeed a few years later in 1895 Wells & Co were gone from 125-130 Shoreditch High Street.

References:
[1] https://victorianweb.org/art/architecture/london/124b.html
[2] https://drive.google.com/drive/folders/18ARjqLBG-If2d6vBtcvgxwn_5oggfA-8
[3] https://consultation.hackney.gov.uk/public-realm/review-of-south-shoreditch-conservation-area/supporting_documents/South%20Shoreditch%20Conservation%20Area%20Appraisal%20and%20Management%20Plan%20Consultation%202021.pdf
[4] https://hackney.soutron.net/Portal/Default/en-GB/RecordView/Index/43634
[5] https://historicengland.org.uk/listing/the-list/list-entry/1235402?section=official-list-entry
[6] https://www.claptongirlsacademy.com/portico-history