With so much knowledge on the forum I am sure there will be lots of information that can be added to this topic.
Shipbuilders Flag: "
Every shipbuilder had a house flag. This was flown at launches because the ship was the property of the shipbuilder and not the ship owner. The ship is only accepted into the ownership of the shipping line when it has been completed to their satisfaction. Up until then it is the shipbuilders responsibility and of course heavily insured should anything go wrong. Ian Johnston, author of the history of John Brown's Shipyard "Ships for a Nation".
When writing the February 2022 Newsletter, I have focused on flags flown on QE2. This made me think that a topic on Shipbuilder and shipping companies flags would be a good addition to the forum.
I found a website
CRC flags with information and photos of house flags for the following companies. The website has a wealth of information on flags see home page where you can select from options, including shipbuilders flags as listed below:
Alex Stephens & Co Ltd
Cammell Laird & Co.
Govan Shipbuilders
Harland and Wolff
John Brown Shipbuilders
John I. Thornycroft & Co Ltd.
Scotts Shipbuilding & Engineering Co Ltd
Smith's Dock Company Limited
House flags of shipping companies:There is also a list (in alphabetical order ) of house flags of British shipping companies.
https://www.crwflags.com/fotw/flags/gb~hf.htmland shipping flags by country
https://www.crwflags.com/fotw/flags/gb~hf.html