Greetings Andy,
I found the below info in the JAWS help menu.
HTH, Andrew
Tables in Word
JAWS detects when you move into, out of, and within a table (from row to row
or column to column) and even warns you when you TAB into the last cell.
JAWS
also indicates when the number of columns changes
Tables can be accessed by tab/shift tab, also you can press insert-8/up
arrow on the numpad to hear the line the cursor is on. Bear in mind tables
will let the cursor move from left to right in a cell one didget at a time
and at the end of the last cell on the last row, jaws will say a warning