Hi, new to this forum, just wondering if anyone can help. My steering has gone notch and if I turn a corner it doesn’t return to centre , any help gratefully received TIA. 

Welcome to the forum Simon, you'll find the members on here are a friendly and helpful bunch 🙂

do you know if your power steering is elecric or hydraulic? This should be in the manual. If it's electric I'm wondering if it's worth getting the battery tested as a lot if electrical issue ls can be traced back to a failing battery. If it's hydraulic, have you checked the fluid level? A leak would obviously affect nthe steering. 

if it's not that, have you hit anything recently? Pot hole, animal etc which could have knocked out the tracking or bent a track rod etc?

cheers

Steve