Changing Name by Deed Poll (UK)

I am looking to change my name by deed poll (unenrolled for now) and so far it looks like you literally just print out some letter, get some people to sign it and then start sending it out. I can’t help but feel like thats not enough of a process to actually change your name since (as its unenrolled) it doesnt look like you have to do much legal work. Has anyone changed their name via unenrolled deed poll and if so how???