i have just changed the coolant tank on my sport due to low coolant warning getting on my nerves I have topped the new one up with the coolant I saved do I need to bleed it off in any way there is a black plastic cap with a cross in advice please as I am taking my wife for an operation tomorrow don't want to break down thanks "Remember its easier to say sorry than it is to get permission " especially off the Mrs !!

Yes they are the bleed screws, open enough to let any air out and then close. Don't over tighten as they are only plastic.
Regards
Barry 2017 Range Rover Sport TDV6 L494 SE Fuji White
2011 Range Rover Sport SDV6 L320 SE Fuji White Loved but GONE
2010 TRAKKA Motorhome Fiat Ducato GONE (What a dud, don't buy one)
2006 Discovery 3 SE TDV6 Automatic Chawton White/Ebony. Loved but GONE
2006 BMW X5 diesel White/Charcoal, Bought new, Gone after 12 years! Was Excellent.
Ex Member Range Rover Club NSW