Credit unions offer an easy way to save and access low cost loans and mortgages Unlike a bank, credit unionsAo shareholders are the customers who use them and profits are shared equally amongst members at the end of the year. Membership is based on a common bond amongst members and in Glasgow Credit UnionAos case you must live or work within the G post code area. Glasgow Credit Union is the largest and most successful credit union in the UK with 32,000 members and over 100 million in assets.