1) Used Google Chrome
2) Opened the page where you enter the dates
3) Selected the 42nd date from the date I was applying in both the From and To fields (selected 30th Jan on 19th Dec, date after midnight)
4) Ticked only one box where I wanted the appointment (Croydon).
5) Opened 15 pages of the above information by 11:55pm
6) Opened my account page for refreshing later
7) At 12:03, I clicked NEXT for the appointments
Selected the desired time and clicked NEXT9) Went on the next page where entered the required personal details
DO NOT CLICK ON NEXT AT THIS STAGE
10) Went to the my account page (mentioned in step 6) and refreshed it three times to test the connection with the server
11) Connection dropped after three attempts
12) Kept refreshing the my account page until server responded
13) Immediately, went to the page where I have entered my personal details (step 9) and clicked NEXT. At the same time, went to another page (mentioned in step 3) and clicked NEXT.
14) SUCCESS! However, if the appointment is taken, close the page and move to the next one. This should now be showing the appointment dates (if step 13 was executed as mentioned above).
15) You should get success very quickly as it happended with me. Although, I had failed attempts on the previous day.
I hope it helps. All the best!