Scottish weak bottled Stout after WW II

Low-gravity and poorly-attenuated Stouts had been brewed in Scotland since the late 19th century. For example, in 1888, William Younger’s S3 Stout was barely 4% ABV and hopped at just 4lbs per quarter (338 lbs) of malt, a very low rate. Even lower, as some, or all, of the hops were spent.
This trend to ever weaker and sweeter Stouts continued, reaching its ridiculous peak after WW II.

Some of these beers are so weak, they could have legally been sold to children, being around the same strength as shandy. Did people drink such beers straight? Because if you did, you weren’t going to have a very merry evening down the pub.

McEwan’s Imperial Stout is really a joke, being under 3% ABV. Is this the weakest Imperial Stout ever brewed? Sweet Stouts were brewed elsewhere in the UK, but never as ridiculously weak and poorly-attenuated as the most extreme Scottish examples.

Scottish weak bottled Stout after WW II
Year	Brewer	Beer	Price per pint (d)	OG	FG	ABV	App. Atten-uation
1949	Aitken	Stout		1038.5	1020	2.38	48.05%
1948	Belhaven	No. 1 Stout		1035	1011	3.11	68.57%
1949	Belhaven	No. 1 Stout		1035.5	1015.5	2.58	56.34%
1949	Blair	Invalid Stout		1035	1016	2.45	54.29%
1948	Maclachlan	Stout		1032	1009.5	2.91	70.31%
1949	McEwan	Imperial Stout		1039.5	1017	2.90	56.96%
1947	Tennent	Stout	13	1030.7	1018.18	1.61	40.78%
1948	Tennent	Stout		1030	1015.5	1.86	48.33%
1949	Tennent	Stout		1032	1017.5	1.86	45.31%
1949	Tennent	Stout	15	1034.9	1018.3	2.13	47.56%
1948	Younger, Geo	Extra Stout		1036.5	1017.5	2.44	52.05%
Sources:
Thomas Usher Gravity Book held at the Scottish Brewing Archive, document number TU/6/11.
Whitbread Gravity book held at the London Metropolitan Archives, document number LMA/4453/D/02/002.