help with beef please - it's really important!

[bednobs]

i need to roast a 1.5 kg piece of sirloin beef today, it's really important to get it right for 2 reasons 1) it cost £22 and 2) i've been having dreams about it for a week - about how nice it's going to be, how juicy, what the slices are going to look like etc
i want it so it's pink in the middle still.
How long and what heat, waht to put on it etc please!

[Mosaic]

Massage with olive oil and season. Slam in the oven on a metal raosting tin on high for 20 mins, turn part way through, then turn down to medium for another 40 - 60 mins. By keep taking a look, turning it and basting it you can judge when it is done to your taste.

[xLilacFairyx]

Hope your beef was beautiful after all Bednobs! x

Wishing I'd done beef tonight, we're having pork meatballs on spaghetti - be fine I am sure!

[bednobs]

it was loverly