A major fundraising initiative over five years to provide 1992-built double fairlie David Lloyd George with new piston-valve power bogies, at a cost of £200,000. This is only possible due to the fundraising by members and general donations received

Carriage 103 was the first carriage of a new Super Saloon design with a longer length, bigger windows, better access, double glazing and heating along with improved bogies. Funded with £86,128 from the FR Society, it entered service in February 2010

A major initiative to improve the visitor experience by enhancing the first class interior of Ffestiniog Railway carriages. An appeal went out to Life members which realised over £40,000 including Gift Aid, which was used to refurbish and improve the interiors of existing First class carriages, with purpose made moquette, as well as ensuring new observation carriages 100 and 102 were fitted to the highest standards

Lilla returned to traffic in 2008 with a brand new (Boston Lodge-built) boiler, thanks to the sterling efforts of the Lilla Group raising £42,286 through the FR Society. Another £22,000 was raised to fund a chassis overhaul in 2015

Flagship Double Fairlie locomotive Merddin Emrys returned to service in 2005 after £185,012 from the Society. This included the external overhaul and repairs to the boiler and the construction of two new power bogies in Boston Lodge Works