hmmm.. one off fee of £40?
Im probing my memory here back to when BT first introduced RIN with Plusnet.. and I when looking at the wholesale pricing lists, I recall there are options for ISPs to be able to offer static IPs.. and it worked out pretty expensive.
So due to the fact that BTr rely totally on BTw products....
and the fact that its £5 pm + VaT for business customers... I doubt it. :/