I know of an Exadata that's being decommissioned soon in the West London area.
It looks like it's an X4-2 Eighth rack,
2 'database' nodes of 2x E5-2697 v2, 256GB RAM, 40Gb IB networking, 10Gb Ethernet (optical)
3 'storage servers' with 36 cores, and 18 drives (unclear if they're 1.2TB 10k or...