Trees to Poles
BT (British Telecommunications plc) has on its website a series of heritage promo films, under the heading "Our History".
This one and well worth a look, Trees to Poles, gives a fascinating insight into the manufacture of wooden telegraph poles in the mid 1960s.
Special mention is made of the then timber importer and pole manufacturer Burt Boulton.
The video is available here on the BT film archive page.