In the United Kingdom, changing your surname on your marriage certificate does not legally require you to stop using your maiden name. Taking your spouse's surname after marriage is a common tradition, but it is not a legal requirement, and you can continue to use your maiden name if you wish.
The marriage certificate serves as evidence of your marriage, and it allows you to use your spouse's surname if you choose to do so. However, it does not force you to change your name legally or otherwise.
If you decide to keep using your maiden name or use a combination of both surnames (double-barreled name), you are free to do so. Many women in the UK choose to retain their maiden names for personal, professional, or identity reasons. Likewise, some individuals may adopt their spouse's surname socially but continue to use their maiden name legally.
It's worth noting that if you do wish to change your name legally, you'll need to follow the specific name change procedures in the UK, which may involve updating various official documents like your passport, driver's license, and other identification.
Ultimately, the decision is entirely up to you, and it's essential to choose a name that aligns with your preferences and makes you comfortable. Whether you decide to use your maiden name, your spouse's surname, or a combination of both, it is entirely valid and acceptable.