Although it is an easy process to remove it, incorrect removal can be either fatal due to the high voltage etc, or end up with a broken fuse or carrier and then you will need to pay them to come and fix it whilst trying to explain to them why you removed it in the first place. This is why they wired with a security seal as to attempt to prevent unauthorised removal. If you remove the fuse, you are in breach of your contract with the supply company and have commited a criminal act.
Although its straight forward enuogh, unless it comes out in one go you are likely to run into problems. I will not touch the main fuse as would rather not have the hassle. If you are going to do it, my advise would that, you shouldnt, but if you do, ensure theres NO LOAD, so switch the consumer unit off, then take firm hold of it and pull it out in one smooth but swift movement. Thats my thoughts anyway.
Personally if i ever had to for whatever reason have to remove one, I would take all measures needed to prevent killing myself, so would ensure I was wearing insulated shoes, appropriate rubber gloves, and some form of mask, then hope for the best. I know this is more than likely over kill, but id rather not do it, just incase it breaks it, as you will not be able to fix it without third party help.
Oh and when you do put it back in, try and get the pins to connect at the same time, and push it in firmly in one go, dont mess about with it.
Best of luck!
The fact shes does it with live meter tails which are more than 3 metres long laced with cut seals gives it an added 'frisson' 
