JZ: I believe AM's point was clear enough, but I am also not surprised at the misunderstanding. This is not having a go at either of you, just pointing it out for the sake of politeness.
UK tax laws are very strict, and you're liable for a fine if you file late. There aren't many reasons to get an extension. Unfortunately, the UK government _does_ consider it our business, which is why it makes resources such as Companies House available.