An interesting site. There are two Sunday Schools and a chapel there, all labelled "Bethel". To "begin at the beginning"; Bethel was a place, later city mentioned several times in the Bible. The name itself means "House of God". For more details see Wikipedia.
1 As well as a few smaller sects incorporating the name Bethel, it was used simply as a name for various chapels, principally "dissenters" aka Free Church. Just as you might have "St John's" CofE you could have "Bethel" Congregational. Indeed this seems to be the case in Sheerness. It appears from scanty information that William Shrubsole
2 was a preacher at Bethel Chapel, Sheerness.
3 Historic England has a photo dating from 2003 which shows the Hope Street church as United Reformed Church.
4 the URC was formed from the 1972 union of the Presbyterian and Congregational Churches.
GSV today shows "The Church in Hope Street" as the name above the door. The foundation stones date this building to 1882, so it is not the one that Shrubsole knew. Next door is a Sunday School (see below) of 1832 and from the way the chapel overlaps the school and from the generally higher quality brickwork, this would indicate that the chapel is a rebuild. The Sunday School in Hope Street is a listed building.
5 Both the quick reference map and the full scale map do show Spring Garden Passage and Hare Street. From GSV the stone above the doorway reads "Bethel Chapel Sunday School 1832". Going around the back (courtesy of GSV) shows obviously modern extensions to the Sunday School and Chapel with the labels "The Church in Hope Street", "The Hope Street Centre" and "The Lighthouse Coffee Shop".
Turning 90° to the
left right, brings up the building that Local Hiker found. I can't find a date on this, but from the style and brickwork it is nearer in date to the Chapel than to the other Sunday School. The map that historic England uses for the search facility shows the building as a "Factory". If anyone is near there and can look at the foundation stones and inscription above the doorway, I'd be interested.
My understanding of this site:1784: the first Chapel was built.
1787: the existing Chapel was extended.
1832: the Hope St Sunday School was built. This might have replaced an earlier Sunday School.
1882: the existing chapel was demolished and the new chapel built.
c.1882: the new Schoolroom was built.
20C: the new Schoolroom was sold off or rented out for use as a factory.
late 20C/21C: the new Schoolroom is converted into flats and sold.
late 20C/21C: the old Schoolroom and Chapel have new extensions built at the rear, and the orientation changed to make this the front.
1https://en.wikipedia.org/wiki/Bethel2https://en.wikipedia.org/wiki/William_Shrubsole_(minister)3https://wellcomecollection.org/works/vvkg2fqc4https://historicengland.org.uk/services-skills/education/educational-images/bethel-chapel-sunday-school-hope-street-sheerness-50395https://historicengland.org.uk/listing/the-list/list-entry/1273419?section=official-list-entry