After 1971, the St Ives branch was single track generally worked by a shuttle DMU to/from St Erth on the main line. Penzance to Truro was operationally much more interesting as it featured (and still does) the expresses from London Paddington to/from Penzance and inter-regional trains from the Midlands and the North of England. In the 1970s, freight was very limited west of St Erth with the only freights being tanker trains with diesel fuel for Ponsandane (Penzance). St Erth had a reasonably busy goods yard and the up sidings handled large quantities of milk traffic to London, often headed by a class 52 'Western' until 1975/76. This traffic ended in 1980. Chacewater (between Truro and Redruth), also on the main line, had a busy Blue Circle cement terminal which hopefully will be included but it will need specific cement wagons such as Presflos. Hayle Wharves was a fascinating location with varied freight traffic worked by class 25s in its later years until the branch closed in 1981. However, class 37s and class 45/46s also appeared on the branch and it would add some much needed freight to this route. Truro also had a fairly busy yard, including traffic handled on the Falmouth branch although I don’t know whether that will be included.