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On the Aberdeen - Inverness line
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July 1961
A Swindon Cross-Country DMU with oval buffers is seen at Malvern Wells in July 1961. Stuart Mackay Collection.

23rd March 1963
The 23rd of March 1963 and a Class 120 unit is working a LCGB Tour of the Birmingham and Wolverhampton area. It is seen here on the line running from Stafford Rd Junction to Herbert St Goods Depot within Stafford Road Works.
Image from a negative in my collection taken by A Dodd. The KDH Archive.

circa 1960
Forres circa 1960, and a Class 120 DMU is heading for Inverness presumably with a service from Aberdeen. The KDH Archive.

27th July 1978
A view between Class 120 power cars W50686 and W50733 at Swansea on 27 July 1978. This shows the covers over the exhaust pipes and the gangways. These were the only Swindon built DMUs not to have Pullman gangways, they had the suspended ex-GWR type. Stuart Mackay Collection.

20th July 1961
Two Swindon Cross-Country DMUs form the 3.10pm Carmarthen - Birmingham Snow Hill service about to pass through Bordesley station on 20 July 1961. Michael Mensing.
Summary
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Description
Modifications
Refurbishment
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Works Photographs
Numbering & Driving Inst.
Liveries
Operations
Operations - Central Wales
Operations - LMR
Operations - Scotland 1958-81
Operations - Scotland 1986 on
Decline
Parcel Use
Images
Details about the preserved Class 120 vehicle can be found here.