They may not be the exact words, but I can share with you the words I have always sung.
As I'm usually alone in singing the full verses, I'm set in my ways and I'm not changing them. I won't be Druv!
.......
Now is the time for marching
Now let your hearts be gay
Onto the merry bugle
Guiding...
We're the men from Sussex
Sussex by the sea!
Let's start by all singing the second verse.
I find this is best done after half-time. Before the start of the first half any singing of the second verse gets drowned out by Simon Le Bon reading out the team sheets.