Our local Islamic Centre says this on the website:
"Based on the rulings of differing of horizons, there is no possibility of sighting the crescent anywhere in Europe on Friday 20th July 2012. A rationale for beginning of Ramadhan 1433AH has been agreed by Hilal Advisory Team and forwarded to Najaf for guidance from His Eminence. Depending on guidance from Najaf, HAT will publish the statement on 20th or 21st July 2012 after Maghribayn, inshaAllah Saturday, 21st July 2012, will mark the completion of 30 days of Sha’baan 1433.
Expect 1st of Ramadhan 1433AH on Sunday 22nd July 2012"