Final answer:
When a British company expands operations into continental Europe, they will sell British pounds to purchase euros, making them a demander of pounds in the foreign exchange market.
Step-by-step explanation:
In the foreign exchange market, a person or firm who demands one currency must supply another currency, and vice versa. When a British company expands its operations into continental Europe and needs to pay for expenses in euros, the company will sell British pounds to purchase euros. This makes the company a demander of pounds in the foreign exchange market.