I bought a 2006 wrk today, test drove it, seemed spot on so I got it! On way home the engine management light came on, but everything seems to be running spot on n sounds as healthy as can be, I’m guessing I just need to have it plugged ? Cheers 

Welcome. That’s unlucky that it came on just after buying it! I’d get the codes read on the ecu. There are so so many things it could be, sensors galor that could put that light on...  Just out of interest, is it standard or has it got a few mods on it - ie decat exhaust or uprated air filter?

Best bet is to buy a code reader (you can get them for £20/30 off ebay) and see what it's flagging up. If it feels like it's running alright then hopefully its nothing major and just a sensor playing up somewhere!