My husband’s grandparents were married on the 16 day of Ab/Av in the year 5663, which corresponds to August 9, 1903. We knew that they were married in London. His grandmother Esther was English. His grandfather, Leon, was from eastern Europe. He had studied medicine and moved to England to practice. He met his wife in an emergency room, when she needed medical assistance for an injured hand.
The copy of their Ketubah. I found out that the ketubah survived a fire, which left the smudge.
But that was all that I knew. Recently I found a copy of the front page of their marriage license or Ketubah in both English and Hebrew.
Esther, the daughter of Avraham Moshe, married Yehuda Leb, the son of Aaron Benjamin in the Great Alie Street Synagogue in Aldgate, London. In Hebrew letters above the English words naming the shul were the words, the Bayt Kenesset DaKalish, which stands for the Kalisher Synagogue.
Once I found this document, I had to do my research, which led to more questions! I knew that my husband’s grandmother was known as Esther. She has several descendants named for her. Her husband did not use Yehudah or Leb, he was known as Leon. And he also has grandchildren named for him. I assume he could not find an English name that he liked for his first name, so went with his second name?
My biggest question relates to the date of their marriage. From the JCR-UK records I found on Jewish Gen, I learned that the Great Alie Street Synagogue was also known as the Kalischer Synagogue, named after a previous congregation. In fact, the Kalischer merged with the Great Alie Street Synagogue, and the same rabbi served the new congregation, Rabbi Israel Dainow. I wish I had the back page with the witnesses to see if he had officiated at their marriage. Our ancestors were married in the congregation just eight years after it was established.
My main question deals with the date of their marriage. The document states they were married on August 9, 1903. However, in the information I found, it says that the synagogue was closed for repairs, only reopening and being re-consecrated on September 18, 1903. Did it close after they were married? Were they married elsewhere by the Rabbi and so given a ketubah from that synagogue? I guess I will never know.
This was not a big congregation, not having much more than 110-120 members from the 1896 to 1915 time period. It was formed when two congregations merged: the Kalischer Synagogue, named for the town of Kalisz, Poland; and the Windsor Street Chevra/Windsor Street Synagogue.
This orthodox synagogue closed in 1969 and the building was demolished. That always makes me sad. I will never get to see it. However, the congregation membership continued on for several decades merging along with others into the Fieldgate Street Great Synagogue. But eventually, in 2014, services ended and the building was sold.
My husband’s grandparents came to the USA in the early 1900s. They ended up in Kansas. The parents of ten children, they have great grandchildren and great-great grandchildren, throughout the USA and Israel.
See blogs below.
https://zicharonot.com/2019/01/11/cemetery-records-impacts-family-stories/
https://zicharonot.com/2017/01/05/the-antique-european-hannukiah/
https://www.jewishgen.org/jcr-uk/London/EE_alie/index.htm
zicharonot 
I wonder whether the civil marriage record would reveal who married them and where exactly they were married. Have you tried to locate it in the English BMD records?
I tried some of the links in Jewish Gen. but will go on Ancestry and see if I can find it there.
Try this one. https://www.freebmd.org.uk/cgi/search.pl
And then I think once you have the volume number and page number, you can order the original here. https://www.gov.uk/order-copy-birth-death-marriage-certificate
Also, this is the official page. I don’t see where marriages are indexed, so you may just need them to do a search for the marriage record. https://www.gro.gov.uk/gro/content/certificates/app_select.asp
Thank you! Wow your research skills are spectacular!