One of Waddell's evidences is the similarity of dress, and the similarity relies upon items that reappear her in Mair's work - conical hats and woven cross-patterned garb. Waddell's conclusions were that the Hittites and Phoenicians were one and the same, that the Trojans were also the same group, and that Brutus the Trojan, the founder of the Britons and their first King in Britan around 1100 BC had journeyed there because of knowledge of pre-existing Phoenician mining settlements in Cornwall and elsewhere.
Of course, Waddell's works are now consigned to the Memory Hole, and the official histories of Britain begin with Julius Caesar "discovering" them in 55 BC, thus ignoring the ancient king lists going back to Brutus and antiquity. This state of historical destruction makes it difficult to understand some Shakespearian works like King Lear (a pre-Roman Briton King), the pre-Roman origins of London and other cities, and certainly obscures the history of the female figure Britannia and the name Albion.
Oh, and there you go again ! What's with the garbage, that Julius Caesar " discovered " Britain ?
Have you ever actually studied the Hittites ? They didn't dress anything at all like Celts and had a completely different culture; not to mention phsiognomy!
Have you happened to have read CS Lewis' science fiction trilogy? He makes mention of the differences between Roman Briton and what he calls Logres.