I've never had a Costa or Starbucks coffee - I've tried to order similar stuff on holiday but, just got tired of the daftness of it.
........ I like 2 strong cups of instant before work - 3 spoons of coffee and plenty of milk in each one, no sugar.
When the weather gets cold, I take a flask of tea to work - 3 PG Tips bags, hot water and a bit of milk, tea bags left in all day - the last cuppa is always the best