Have you checked in which registration district the marriage took place? If for instance, the district is Lincoln then it's obvious that the marriage couldn't have taken place in Sleaford!
Also, have you seen the newspaper report, or just a transcription?
ETA: Do you know where the bride and groom were living/likely to be living before they got married?
Hi Pamthomas, thanks for the suggestions.
I've seen the film of the newspaper, not a transcription.
Bride was from Helpringham, where they were to live together.
The Newspaper report also says the reception was held at Picturedrome Café, Sleaford (now disused club Flicks).
I just checked the marriage index and the registration district is Sleaford.

Maybe someone at the Newspaper was having a bad day?
If I could rule out Rev. Farther Simon working at Lady of Good Council Catholic Church in Sleaford, that would rule them being married there (unless the Newspaper employee was having a REALLY bad day and got the name of the Rev. wrong too).
