This is a small White Knight Tumble Dryer. It is smaller than average and is shown here on a worktop. It is the vented type but I don't think we have the hose which would go out of the window.
The White Knight C37AW user manual (English - 12 pages) can be found here https://www.manuals.co.uk/white-knight/c37aw/manual
Tumble Dryer (Warsash SO31)
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