Rose Caterpillar or Slug with Gold specs

Rose Caterpillar or Slug with Gold specs

Observation - Rose Caterpillar or Slug with Gold specs. Description: I saw this light red rose coloured caterpillar/slug in Regents Park, London and not sure what it is. It has fantastic gold specs all over and a blue antenna . It was in the middle of the pavement and so i nudged it a little to see if it was alive and I go

I saw this light red rose coloured caterpillar/slug in Regents Park, London and not sure what it is. It has fantastic gold specs all over and a blue antenna . It was in the middle of the pavement and so i nudged it a little to see if it was alive and I got a fright when it reacted so fast and flipped itself over in defense. It kept doing this rapid 180 degree flip. I moved it off of the pavement and into the shrubbery where he wouldn't be stood on. Let me know if you know what it is! Thanks!