Hi hope some one can advise do I just leave it in dynamic response mode or change it to snow and gravel mode for the snow that we are having I always just leave it in the auto mode normally for every day use any one else do this thanks

If you have Terrain Response 2 (the auto on the Terrain Response) and leave it in auto mode, it should do it for you. I'd probably still select snow/grass mode manually to make sure the system was really working on that setting. Make use of low range too if required. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Dynamic response is for when you want to push on....it stiffens the damper settings and changes the fuel mapping to make the engine more responsive.... think twisty windy a roads!

For generic driving in snow leave it in pure auto.. the car will do it for you... for more treacherous conditions then put it in snow mode....

As above