is it possible to change username?

no its not possible

info from lfs mainsite FAQ:

Answer to: Can my website username be changed?:No. At this time it is not possible to change username (which is why this is stated on the registration page).

Thanks, I couldnt be bothered looking there.

It is possible buy a new name would cost £24.

oh, but it will come with a free racing simulator

but i have a feeling you already have that simulator

and did you search?