His relationship with Hen wasn't one of mutual admiration despite the exploits of Edredon Bleu (did you know that mean "blue eiderdown" in Fench? Ho, ho, only kidding, big fella) and Best Mate.
On the subject of Lewis' last horse, I believe both he and new wife Jennifer (what first attracted you to dull millionaire Jim Lewis?) Harrison were involved in Marching Song. My understanding is that while Marching Song was clearly a fairly moderate beast, his owners, who also included former champion jockey Graham Thorner, maintain he was the best horse any of them had ever clapped eyes on and refused to accept the insurance settlement they were offered. I believe the dispute is ongoing.
Lewis' only runners under Rules in this country since then were Rivaliste and Like Minded, both owned by different partnerships, but both sold on since, the latter in August. He may still have horses in partnership with Markus Jooste in South Africa. He certainly did a few years ago.