Sparkingchip:
http://www.securemeters.com/files/6314/7531/1232/liberty_100.pdf

The model number on the photographs show the meter as a Liberty 112 whereas the link is for a Liberty 100.

The description of a Liberty 112 shown here zigbeealliance.org/.../. describes it as: 

Liberty 112 By Secure Meters

The Liberty 112 is a single phase smart electricity meter with auxiliary load control capability and with modular communication hub options, inclusive of an Energy Service Interface (ESI) for both Electricity and Gas commodity.


There does appear to be an unused cable inlet for a control wire in your photo?


So far cannot find anything else for a 112

Clive

To take a meter reading on a standard electricity tariff:

1. Press 6 on the keypad.

• You'll see the letters “IMP R01” appear on the screen.

• Wait a moment – then eight digits will appear, followed by “kWh” towards the bottom right of the screen.

• Take the first 7 digits – this is your reading.

To take a meter reading on an Economy 7 electricity tariff:

1. Press 6 on the keypad four times.

• Wait a moment – your day/peak and night/ off-peak readings will show up on the screen one after the other, starting with off-peak.

• For your off-peak reading, you'll see “IMP R01” onscreen. A second later, you'll see your meter reading: eight digits, with “kWh” towards the bottom right of the screen.

• For your peak reading you'll see “IMP R02”. A second later, you'll see eight digits, with “kWh” towards the bottom right of the screen. You'll only need to take the first 7 digits when taking each of these readings (i.e. nothing after the decimal place).