Tiling - what to fill gaps round pipes with?

[JamesA]

I've gaps round my hot/cold pipes and toilet waste where I've titled.
Whats the best way to fill these?
Grout?
General Filler (I have all-purpose decorators filler)?
Silicone?

Do the pipes need to be able to move or do you want to keep them rigid to help prevent noise?

 

[masona]

I would use Silicone sealant and you can get high temperature sealant depending the temperature of your hot water

 

[gcol]

Use grout.

 

[Moz]

Use grout.....

 

[joe-90]

Use grout.

 

[sticky]

use.....wait for it
grout,if youve cut nice neat holes..