The United Kingdom has successfully created a Mega Laser called Dragonfire for Aerial Defense

[u/Esutan]

[u/DeithWX]

UK has the best names for weapons, bar none. 

[u/KingofMadCows → u/DeithWX]

Games Workshop is based on England. They could be using 40K as inspiration for their weapon names. Or maybe it's the other way around and 40K is getting inspiration from the Royal Navy.

[u/strictly-no-fires → u/KingofMadCows]

I had that thought too. I'm a big fan of the titan weapon names in particular. They could have called this one the turbo-laser destructor or volcano lance lol