Few take Local Company Data seriously and they would have good reason.
The reason for this is because of the lack of consistency in their data collection.
I used to work for them.
LDC do not count all the shops in towns and city centres. They count a portion of shops in an area and based on that count average out the percentage to the rest of the town or city centre.
So if the count in Stafford took place in the north of town this would be worse than the south.
They also do not count offices, leisure, council buildings or homes in towns/ cities in their stats. Although they have been known to be included in some areas.
In some cases they have been known to count empty upper floor premises as an empty unit even when the ground floor retail is a occupied.
Councils and anyone who wants real data do not rely on LDC as their stats are somewhat negligible. Councils tend to ( or should) be doing an actual count.
If someone did an actual count in a number of towns they should not be surprised to see a variance range of at least 2% either way compared to LDC data