(Reuters) – SSP Group, which operates food outlets such as Upper Crust at airports and train stations globally, on Tuesday posted an over 14% sales growth in its first quarter, buoyed by a rebound in leisure travel, and also forecast travel demand to remain resilient. Air travel rebounded last year, particularly in North America and Europe, as more passengers took holidays and business trips despite broader pressure on consumer spending. “There continues to be encouraging momentum in our key growth markets of North America and Asia Pacific and we have also delivered double-digit like-for-like …