Extraordinary Form Mass Times in the Diocese
St Pancras, Ireland's Lane, Lewes, East Sussex BN7 1QX - 1st Sundays of the month 12.30pm Low Mass and Saturdays 10am Low Mass
St Mary Magdalene, Upper North Street, Brighton BN1 3FH - Sundays 6.30pm Low Mass and Fridays 7pm Low Mass
St Mary, Surrenden Road, Brighton BN1 6PA - Thursdays 7pm Low Mass
St Thomas More, 54 Sutton Road, Seaford BN25 1SS - 3rd Sundays of the month 3pm Low Mass
Sacred Heart, Essendene Road, Caterham, Surrey CR3 5PB - Wednesdays 10am Low Mass
Bethany Chapel, Diamond Farmhouse, Lewes Road, Easons Green, Uckfield TN22 5JH - 4th & 5th Sundays of the month 10am Low Mass (Phone 01825 840305 beforehand to confirm).
You can find details of occassional addtional Masses on the A&B Latin Mass Society Blog.