October 2009 - Compulsory online filing of VAT returns

If your turnover is more than £100,000, you will have to file your VAT return online for accounting periods that start on or after 1 April 2010. Or if you register for VAT on or after April 1 2010, you will have to file online regardless of your turnover.
HMRC website
If you have any questions please do not hesitate to get in contact with us and we can assist you in preparation for this important change.
Don't forget that when you file online you receive an extra 7 days to pay the VAT, although this must be done electronically.