The Jaywick Buebottle

Not sure of the year, but I went there as a child. I remember the roller skating rink, which was I believe opposite my family's chalet, and every now and then this vehicle came round which was named by locals as the 'The Jaywick Bluebottle'. as the toilets were outside, and this contrapsion used to come round and empty the Nelson toilets, wow! the smell was unbelievable. Does anybody else remember it? Also I remember Lonnie Donigan being always played at the roller rink, God those were the days, I am 64 now and remember it as if it was yesterday.