A little-known British company has appeared to threaten Donald Trump with legal action after his foundling social media platform, Truth Social, launched with a logo that was almost identical to an existing design. The Truth Social app became available on Sunday night for Apple users and was almost immediately ridiculed for a logo that was not too dissimilar to that of a small British start-up called Trailar. Both logos use block-style shapes that form the letter “T” – making Truth Social a target of dozens of comments and comparisons with the logo for the British firm, which sells solar panel...