When the rain stays away, I tumble out of the office – my head a jumble of words – and head for the canal. It is always a relief to avoid the speeding hurtle downhill on a crowded bus and instead walk the two miles through Regent’s Park to the tube. Placing one foot in front of the other, I can feel the stresses of the day fall away almost immediately and find comfort in the sun freckling my nose. My folded spine unbraids itself and commuting suddenly feels like an extra special treat (especially when, as today, blue skies, dark chocolate rice cakes and magenta roses are involved.) When the sun shines, springtime in London can be rather swell.