The Aberdeen-based firm is buying majority stakes in the Ketch and Schooner fields off the Lincolnshire coast from Tullow Oil in a deal that will result in a big increase in its production.
The deal reflects Faroe's enthusiasm for a core area in which it has amassed a big portfolio of exploration and production assets through acquisitions and success in licensing rounds.
Chief executive Graham Stewart noted Faroe will be able to use losses it has built up as result of its UK activity to reduce any tax payable on the output from Ketch and Schooner.
He previously flagged up Faroe's desire to buy UK production to utilise tax losses. The losses totalled £78m at 31 December.
Faroe expects its share of production from Ketch and Schooner to average 3,000 to 4,000 barrels oil equivalent daily.
Mr Stewart noted: "Both assets offer numerous possibilities and options to grow."
In its 2013 annual results announcement in March, the company said it expected production to average 4,000 to 6,000 boepd in 2014.
Tullow, which has made big finds in Ghana and Uganda, has decided to focus on light oil assets.
In December 2012 Tullow said it planned to sell its gas assets in the UK and Netherlands.
Chief executive Aidan Heavy yesterday said Schooner and Ketch "provided important, stable, cash flows" which have helped fund successful frontier exploration.
He said efforts to sell stakes in assets were taking longer than initially expected but market conditions are improving.
Faroe will pay an initial £35m with a further £10m payable if production from a recently developed area of Schooneer meets targets. It will pay up to £92m royalties depending on the output from two as yet undeveloped areas of Schooner.
Separately, Trinity Exploration & Production, the Trinidad focused business with an office in Edinburgh, grew underyling operating profits to $21.6m (£12.8m) in 2013 from $16.4m in 2012.
Trinity, chaired by North Sea veteran Bruce Dingwall, expects production to average 3,800 to 4,500 barrels oil equivalent daily in 2014.