Watercress Line

Due to the COVID-19 emergency the Watercress Line Mid Hants Railway is temporarily closed to the public. The safety of our staff, volunteers and visitors is our most important consideration. You will know that the Watercress Line relies on ticket revenue to cover its operational costs, which currently work out more than £75,000 a month. Without money coming in from running services, the railway is eating into its financial reserves to survive. If you can help, please click on the Virgin Money Giving link below which allows you to donate a single amount or pay monthly if you're able to. You can also text WATERCRESS to 70085 to donate £10, texts cost £10 plus one standard rate message. Thank you for continuing to support us during this unprecedented situation. We hope to be able to welcome you back to the Watercress Line soon.

Home » Rolling Stock » Steam locomotives

80150 - British Railways Standard Class 4MT Tank Engine

Status Ongoing conservation programme and fabrication of parts underway


The most recent addition to the Mid Hants Railway fleet was acquired from Glamorgan Council in exchange for our ex-Bricklayers Arms turntable which they intend to install at Barry as part of their plan to turn it into a mainline destination.

After initially being based at Brighton, 80150 was allocated to Eastleigh shed and reportedly was later at Guildford, though there is some doubt about this. Mid Hants driver and former Eastleigh fireman Bob Cartwright remembers working van trains with 80150 in the 1960s and picking up watercress from Alresford, making the locomotive historically perfect for our line as well as being powerful and economical.

80150 was sold to Woodham Brothers of Barry in January 1966 and was the last of the class to be saved from the scrapyard, being purchased by the Wales Railway Centre of Cardiff in 1988. It was moved back to Barry for storage in 1993 following some cosmetic work. As a result, it is in reasonable condition considering how long it has been since the locomotive was withdrawn from service. 80150 moved from Barry to the Mid Hants, arriving at Alresford in January 2011.

Our Standard 4 tank has been heavily stripped of parts so any help regarding the whereabouts and availability of suitable components would be greatly appreciated. Please contact us at mhr.friendsof80150@btconnect. com ; we'd love to hear from you.

A support group, “Friends Of 80150” was formed in December 2016 and has since carried out much work to conserve the locomotive including fitting of parts already made by the team working on Standard 4 75079.

Want to find out more about the loco and the restoration team, watch our short film here. 


Built at
Brighton Works
Build year
4 mixed traffic
Entered service
28 December 1956
R.A Riddles
Shed allocation
December 1956 Brighton, September 1963 Eastleigh, Guildford allocation dates unknown
Total built of class
17 October 1965


Cylinder size
18" x 28"
Driving wheel diameter
5' 8"
Fire grate
26.7 sq ft
Max boiler pressure
225 psi
Total length
44' 10"
Tractive effort
25515 ibf at 85% boiler pressure
Tender coal capacity
3.5 tons
Tender water capacity
2000 gallons
Wheel arrangament
Working order weight
86 tons
Valve gear