R H and J Pearson's Patent Automatic Action - Queensgate Gardens, London, UK - Unique Manhole Covers on Waymarking.com

Coal cellars were normally placed in the basement of larger houses as it was out of the way and did not interfere with the day-to-day running of the household and kept the coal dust to a minimum. To save the coal delivery man carrying the sacks of coal through the building, to the cellar, an opening was made at street level to allow the coal to be poured into the basement. The hole need covering and securing, to prevent a trip hazard and illegal entry, so the coal hole cover was invented.

The Faded London blog mentions R H & J Pearson's and tells us:

The Pearson's not only seem to be significant local ironmongers, as evidenced by the number of coal-hole plates in the area, but were also engaged in speculative building projects. Sadly this doesn't always seem to have gone quite to plan every time. In 1869 R. H. Pearson (ironmonger of Notting Hill) and a Mr Tidesley (brickmerchant) appear as trustees seeking the bankruptcy of Henry Saunders (builder) of Kensington. A later appearance in the records shows that by 1893 The Statist magazine was discussing the make up of Mr Robert Henry Pearson's wealth (and the fact that he had over 200 people working for him at the time) so presumably that was the year of his death.  The business carried on though and in 1900 the British Architect magazine were reporting news of other, more domestic products, although coal hole plates were still on the menu

RH & J. Pearson, Limited, wholesale and manufacturing ironmongers, High Street, Notting Hill, W., have just issued an illustrated catalogue of their well- known specialities in close and open-fire kitchen ranges

So a significant supplier of local coal hole plates then and appearing on our posting today with what I think is a very attractive design with the seven circles with leaf cluster details.