Insurance question

[Nathan1305]

I passed my test on thursday so i'm now in the process of getting the car road worthy and the insurance sorted. After doing quotes i've come across something strange.

If i put the value of my car as £450 it comes back as
£197.98 x 1
£92.25 x 10

However, if i put it as £1100 it comes back as
£181.36 x 1
£84.70 x 10

Now i know they probably won't pay out on that, but is there anything stopping me putting the value of the car as £1100 and pleading ignorance if they say i over valued it?

What insurance company is that? I need to insure mine but it's £200+ a month