I need to sort columns of data, but in batches on the same worksheet.
e.g. There will always be a heading on row 1, followed by a sub-heading
on row. Then follows data on rows 3 - 10. Finally, a blank line (row 11).

In this example the next batch of data commences on row 12 (heading) and
row 13 (sub-heading), followed by 13 lines of data (rows 14 - 25). As
above, a blank line finishes the sequence on row 26.

1 Heading
2 Sub-heading
3 Data
4 Data
5 Data
6 Data
7 Data
8 Data
9 Data
10 Data
11 Blank
12 Heading
13 Sub-heading
14 Data
15 Data
16 Data
17 Data
18 Data
19 Data
20 Data
21 Data
22 Data
23 Data
24 Data
25 Data
26 Blank

The data part of the worksheet always varies, which is my problem. Data
can be anything from 1 to 40 lines. Could some code be created which
would recognise the blank line and sort each batch of data by a chosen
column?

The data represents horses in a race, which varies from day to day.