Trust Returns needed?

[Vanilla Slice]

I'm setting up a bare trust for my great niece, using Hargreaves Lansdown's Vantage Trust account.
It seems HMRC will "look through" the trust and assess all income on the beneficiary, but do the Trustees ever need to submit a Trust return or revaluation to HMRC?

[maths]

No need for trustees to file a return. Any income/capital gains are those of the beneficiary and need to be returned on their own tax return.

[Vanilla Slice]

Is the Trust subject to the ten year rule, or does it avoid this unnecessary burden?

[maths]

No, as a bare trust is not a settlement for IHT purposes.