Two fire service badges
 

Back again with a couple more car boot finds:

The first is a National Fire Brigades Association (NFBA) badge, which I can date between 1918 and 1949 based on when the association existed. I can find a fair bit on the association itself online, but any specifics on the badge would be useful.

The second is a Trinidad and Tobago fire service badge, which besides a couple other examples on google images, I've had no luck in finding more information on. But as it's a QC I can at least assume it's no older than 1953! :D

If anyone has any information that can help, or can point me towards some resources where I can, it would be greatly appreciated.

The Trinidad & Tobago cap badge was used up until Trinidad ceased to have HM The Queen as Head of State, whenever that was. A quick "Google" should reveal to you the date. I refer to is as a cap badge, you do not give the size. However, an identical pair of badges (but smaller than the cap badge) were utilised as collar badges.

Dave.

Thanks Altcar, that narrows it down to 1976. As for the dimensions, it's 30x32mm (WxH), which seems more like collar dimensions to me.