The ladies will take on Cullompton in an effort to reach their first Cup final in many years.
The team came through a nail-biting quarter-final against Old Leamingtonians to win a home draw in the final four having left it late to secure a one-point win.
Teddington trailed 20-14 going into the final minutes of the game only to score a superb try and conversion to take out the narrowest of wins.
The ladies would love the support of the entire club in the semi-final so please put the date in your diary and get yourselves down to Bushy Park to cheer them on!