I don't know much about "Bolton, Son and Wood" either Paul, but in my searches of old newspapers I found a mention of them, dated Tuesday 4 September 1877, in the
Staffordshire Sentinel where it was reported that a tragic accident had happened at the Orford Lane Glassworks of Bolton, Son and Wood, when a cupola chimney collapsed into the street killing two children and injuring many other children and adults. Earlier the same year, in April 1877, Thomas Barker and Thomas Nevins - both glassmakers at Bolton, Son and Wood - were fined for employing children after 10 o'clock at night! [Source:
"Narrow Windows, Narrow Lives: The Industrial Revolution in Lancashire" by Sue Wilkes]
Meanwhile, on the Great Glass website I found a mention of the glassworks as follows,
Bolton, Edward
Warrington, Lancs, England (c 1869 - 1901)
(see also the Orford Lane Glass Works. Formerly Robinson & Bolton (1855-1869, Peter Robinson leaving to found Robinson & Skinner), becoming Edward Bolton (1869-1875), then Bolton Son & Wood (1875-1877), Edward Bolton (1877-1885), & finally Edward Bolton & Sons (1888-1892), the glassworks finally closing in 1901. Pressed glass. 7 designs registered from 1869 to 1875, then 1 design (4th June 1877) as Bolton, Son & Wood, 1 design (11th December 1885) as Edward Bolton, and 1 last design (11th August 1888) as Edward Bolton & Sons
So the design you have is the only one they registered as Bolton Son & Wood, Paul.