Has your car got Air bags, anti lock brakes, side inpact bars etc etc for your safty and a mot certificate? I bet the answer is yes
yet we spend how much time in our cars compared to out houses
It would be prudent to get someone to test your house do not forget electricity can KILL the problem is because your lights go on and off everyone thinks that the house is safe but I bet the instalation is over 20 years old and has been DIYed no end in that time 🙄
I would at least get the consumer unit replaced to the latest double rcd spec (I have)this is part P reportable and the house would have to be tested on completion
Part P info
If you want to change the Circuit breakers that is not an issue (you are not affecting the wiring) it is no differant to changing the fuse as long as it is the right size
But if your board is that old to use rewireable fuses it does make me wonder about the state of your wiring
Please do not think that I am scaremongering but with what I have seen in the past ( the worst job ever I cried, enough said )I would much rather see people not harmed for the sake of a few quid