I am starting a new job. Clothes-wise I will be wearing trousers, probably mostly jegging/skinny, and a shirt or nice jumper.
Currently would wear with Chelsea boots, in summer with sandals. But what in between? I would normally wear trainers/converse, but not allowed. What style of shoe would go well, bearing in mind I am going to be on my feet most of the day. Currently I own one pair of heels, my only pair of shoes 

Help! What should I be looking for?