Hi Nick,
The Marconi VT161 employs an unique Thorn hand wired chassis in which the metalwork was used in certain export TV receivers.
Link to the restoration of a VT161 by HKS:
https://www.vintage-radio.net/forum/...i+VT161&page=1
My contribution to the topic can be found in page 2. Post No. 24 shows the replacement mains dropper resistor. A slab like component used in later Thorn models.
DFWB.