Lorien Trust (sometimes abbreviated to LT) is the trading name of Merlinroute ltd., a Live Action Role-Play organisation that runs LARP events at Locko Park, Derby, UK.

In addition to the Factions, there are also a number of international Guilds, whose In Character role is to provide training and support for members of different professions.

In the early years of the LT, Erdreja was conceived as an open gameworld: players were allowed to play any kind of character they wished.

The races, like much of the rest of the gameworld, are drawn from fantasy literature: Erdreja is saturated with magic of various kinds, and spell-casting characters are common.

In June 2011 the Lorien Trust gameworld (more specifically the bears faction forums) was found to be the 385th most visited website by the UK's Department of Transport.

[5] In October 2012 the Huffington Post[6] posted an in depth article exploring a first-time roleplayer's view of the Live Roleplay scene from the point of view of someone attending the Gathering for the first time and interviewing a number of attendees, charting The Lorien Trust and other systems in the UK.