"At the very early stage Derrie was the original ecclesiastical settlement which was built up through Sir Henry Dowcra's involvement in it from 1600 onward. From 1608 very little of it was left and by the time the Plantation actually began in 1610 there was an attempt to revitalise a small settlement here.
"The strategic location of Derrie on the edge of the river meant it was always going to be a prime location. So at the time of the Plantation the building of the fortified site here was very much to do with continued defence of the location in favour of the English, given that this was an area that proved the most trouble in previous years.
The Plantation here became a blueprint for other areas, Dr Margey revealed: "The city was one of the first mapped out cities of the Plantation - so the actual mapping here and the building of Derrie was very much going to be a plan for elsewhere."
The role that the London Companies played in ensuring 'Derrie' thrived was basic but vitally important.
"The London companies brought money with them, which many of the other locations of Ulster just would not have. The other locations in Ulster were 'planted' individuals with money who were expected to pay money in order to build homes and bring settlers in.
"The London Companies came armed with their own money. They were very, very wealthy in London at the time, so they had significant funds behind them, which meant they had the funds to build the city.
"That is why 'The Derrie' became known as London-derry - because of the association with London that the site of 'The Derrie' was offered to the London Companies for Plantation.
"It was very vibrant and had plenty of natural resources to be exploited."