Mix the lactose free cream with the lemon juice, horseradish and a little salt and pepper. For the dressing, whisk the lime juice and zest with the golden syrup, ginger and seasoning, then whisk in the oil. Lay the smoked salmon and shrimp on 2 plates, then top with a dollop of the horseradish cream. Toss the salad in most of the dressing and pile on top. Drizzle the remaining dressing around the plate and serve.