It seems HTC and Phone4u have decided to jump the gun and release the HTC Titan and Radar earlier than what was stated as the release date - possibly to combat the iPhone. The two handsets were originally said to be available October 7th for ordering via the UK retailer website, which we found aberrant as the devices are readily available in stores.
One can find both the Titan and the Radar ready for order and shipping on the Phones4u website, or you can check into your local store for a more hands-on purchase. Contracts are available with the cheapest being Orange with the Radar at £23.50/mo and Vodafone with the Titan at £31/mo.
Thanks Ross for the tip!
Update: Our tipster just confirmed the purchase of an HTC Titan from Phones4u. He did share this pic of his new phone before relegating it to the charger.