PMSL
Stephanie pointed this out to me earlier today, and it wasnt until earlier I knew what she ment.
Listen to the very end of this advert:
It sounds so much like The Tree doesnt it?
Eastenders and Big Brother are both filmed in the same place, so while working on CBB they might of asked the voice of the tree, to quickly record that bit.
Its possible tbh.
I miss the tree, I hope they keep HIS Voice for summer.