We hired from Holidays Afloat at Market Drayton in late 60's when I was about 13-14. The boat was a cruiser style, but with a steel hull rather than the more usual wood or GRP. Powered by a diesel engine with hydraulic drive that seemed quite noisy and a bit rough. Two of the boats in the fleet I remember the names of were Drayton Dormouse and Drayton Dabchick, but can't remember the name of the boat we hired.
Must have got on alright with Harry Machin, the proprietor, as we were back a couple of years later to buy our first boat from the yard. Don't know if it was from them or if they were acting as brokers, or it was privately and the boat just happened to be there. Some history of the yard here: http://www.talbotwharf.co.uk/heritage.html