I seem to remember that my FRI 1 used the same form as my FRI 2. As this is effectively FRI 4, I would expect the same form again?
By the way, don't get too excited, your £80k will be about £46k after tax and NI!!! Which after the 5 year RoS means about £9k extra a year over that period
My £50k FRI2 was about £29k after all the taxes and thus about £6k/yr over 5 years.
Not grumbling, though, it kept Mrs LJ happy for a fortnight!!!
LJ