Removing the exhaust manifold heatshield
The top turbo heatshield must first be removed to gain access - see Removing the top turbo heatshield.
Removing the top turbo heatshield takes out one of the exhaust manifold heatshield bolts (blue arrow) but the remaining two M6 x 10mm bolts (red arrows) need to be removed:
The heatshield cannot be removed completely until the dipstick bracket is removed. Remove the M6 x 10mm dipstick to bracket bolt (green arrow) then move the heatshield out of the way to gain access to the 2 off M8 x 16 dipstick bracket bolts.
Once the dipstick bracket is removed, the heatshield should simply lift out. Note it is possible to remove the dipstick bracket bolts without removing the heatshield using a slim socket and judicious bending of the heatshield.