Advisory: No use outside UKThe naturalist, 97, returns to BBC One on Sunday with a third installment of his hit series Planet Earth, and in an earlier timeslot than usual.Producers have said they hope this means more children will be able to tune in.The second series of Planet Earth launched on the BBC in 2016 at 8pm, but the new series will air at 6.15pm.

Advisory: No use outside UKThe naturalist, 97, returns to BBC One on Sunday with a third installment of his hit series Planet Earth, and in an earlier timeslot than usual.Producers have said they hope this means more children will be able to tune in.The second series of Planet Earth launched on the BBC in 2016 at 8pm, but the new series will air at 6.15pm.