The UK do not have the same system as the USA so you cannot get traffic to interface and show on a Garmin 430
Maybe not the XRX to 430, but you can certainly interface it to the Garmin 496 / 495 and 395 I believe as well as the Aera. Traffic is depicted on the gps screen with TCAS like symbology as well as audio TRAFFIC alerts. Gives very accurate altitude and azimuth data.