Alan from Christchurch NzFor Lionel from Sussex. If you search Papers Past (https://paperspast.natlib.govt.nz/newspapers) you will find a number of hits for Leslie Harris who toured here around 1906 billed as the World's Famous English Society Entertainer. It's before your father was born so it is not the "post-flight" information you asked abouy.
Lionel from East SussexI'm new to this sort of thing but my grandfather was on the halls and I think toured with Morny Cash in Australia early in the last century. Gramps stage-name was William Burr, or possibly, Leslie Harris. Wicked Willie, as he was known in the family, deserted his wife and family shortly after his fourth child, my father, was born in 1911. We, his grandchildren, are trying to research what happened to the old bugger, post-flight, and if any thing is known, would be most grateful for information. He was not associated with any songs of the quality of Trafalgar Square, unfortunately. It' s a great song and it is good to see that the song continues to flourish in the hands of the likes of Roy Hudd and Richard Thompson.