Thread: Unknown eucalyptus

Are there any eucalyptus experts out there who might know what species is shown in the attached images?
I had a delivery of eucalyptus logs from a local tree surgeon (I live in the England) and I was intrigued by the fact that the inner core (heartwood?) was lighter than the outer layer (sapwood?).
The sapwood (if that is what it is) is reddish brown whilst the inner wood is a pale beige with some darker areas in some of the slices. I am used to the sapwood of trees being lighter than the heartwood in most species but this is my first eucalyptus timber.
The bark is thick and spongy (1 to 3 cm or more) and peels off easily in large sheets. The bark of the main stem is flaky and darker than the branches. The branches have beige coloured smooth bark which is also spongy and peels off easily.
See the images attached. Please ignore the fetching pink acrylic paint on the ends of the logs which I'm keeping to rip in to boards. I have read that eucalyptus has to dry very slowly to avoid severe warping etc. The logs I'll make in to boards will be sawn up as soon as possible. The rest is firewood (and will also be chopped up as soon as possible).
There were a few leaves with the logs and they are lanceolate in shape, about 10 to 15 cm long about 1 to 1.5 cm wide in the middle. My research on the internet suggests that this might be Red River Gum (Eucalyptus camaldulensis), but I'm far from certain of this.
Eucalyptus.jpg