Take the turkey out of the fridge 30 minutes - 1 hour before cooking.
Preheat an oven to 150°c/130°c fan (302°f/266°f).
In the meantime, add the softened butter & herbs into a mixing bowl then season with salt & pepper and stir to combine. Set this aside for now.
Next, set a large frying pan/skillet over a high heat, add in the tbsp of vegetable oil & leave for a minute or two, to get hot.
Season the outside of the turkey with salt & pepper then add into the hot pan. Sear on all sides, until golden brown all over then place onto a wire rack, set inside a roasting tin lined with foil.
Brush half of the herb butter over the turkey then transfer to the preheated oven & roast until the meat reaches an internal temperature of 71°c/160°f, basting with the butter & juices from the tray every 30 minutes or so. The total roasting time will take 2-2½ hours.Take the internal temperature in the centre of the turkey. Turkey is full cooked when it reaches 75°c/167°f, but the temperature will continue to rise as the meat rests. Once cooked, brush the remaining herb butter over the turkey, loosely cover with foil & let rest for 30 minutes.
To serve, remove all of the twine from the turkey then slice with a sharp knife.