Thank you so much for your very full message. I found the Essenhoek suggstion most interesting, and it has given me renewed enthusiasm for my searches for Hendrick's departure/arrival into England. I shall also search port records, if there are any for 1700s, for Antwerpen and Rotterdam. Re. the VOC records, I had previously found a mention on them for a Willjeminte van Essenhoogh, on the event of her seaman husband's death in Batavia, and also their marriage on the Dutch genealogical records, but I cannot connect her to Hendrick - so far. Yes, I have searched for Hendrick van Essenhoogh on the Dutch records, with no result.
Many thanks for your invaluable help, and I will let you know if I have any success.