According to "Kitchen Garden" magazine you can still sow the following this
month:

Beetroot
Carrots
Courgettes & marrows
Endive
French beans
Lettuce, radish, salad onions
Peas
Pumpkins & squashes
Runner beans
Sprouting broccoli
Swedes
Sweetcorn

Hope this helps!
Jayne

"Melanie" wrote in message
...
I know it's very late for sowing seeds (I've been too busy getting the
floral part of my garden into shape) but are there any vegetables I can
sow
now that will crop this year, preferably from the end of August onwards?