All these will be done in order to make sure that the seller and the buyer receive the fair market price or value of the product making sure that there is nobody who suffers a loss. There are various reasons that have led to people engage in Gold UK industry. These reasons include.
This is one of the major reasons why people invest in gold. Actually, when you keep money in the bank, financial institution or savings account, the possibility of getting less money in terms of net present value in future is very high. However, if gold is bought today for the same amount of money, after a few years, the price will be higher than even the interest that the money would have gained when kept in a financial institution.
Keep browsing here https://en.wikipedia.org/wiki/Bullion.