Surprisingly enough, neither the FR, nor the WHR, possesses a locomotive turntable in operational use. To expand on that, from what data is available, the WHR never had one during its, or its predecessors', existence.
The FR had a number of wagon turntables. Many still exist, although the one at Penrhyn Station was reinstated for show. There are still wagon turntables under the slate waste on Maenofferen wharf at Minffordd Yard, and one of the two wagon turntables in Boston Lodge top yard is still used for turning small locomotives including the England Engines.
The FR had 2 turntables for locos and carriages. These were located at Duffws (put in in 1870) and next to Boston Lodge cottages 3 & 4 (put in in 1869, 22ft long and built by Baines Railway Foundry, of Soho, Birmingham). Boyd states that the Duffws turntable was moved to Glan-y-Pwll in 1900. It appears that the Boston Lodge turntable was in use until 1934. The Glan-y-Pwll turntable almost certainly fell out of use at about the same time.
The associated pit of the Glan-y-Pwll turntable (which still had the outer circular rail) came to light in 1976 during preparation for construction on the site and was subsequently covered over. It was located alongside the old engine shed and is now buried underneath the steel shed which has been built alongside.
The Boston Lodge one is still in situ, underneath the garage next to Boston Lodge Cottages (see here for further details.)
- "Letter from Hugh Davies", Ffestiniog Railway Magazine, Issue 156, page(s): 488