The campaign group against Monmouthshire County Council's plans to move Abergavenny livestock market to a new site near Raglan say they will take their fight to the Appeal court.
On Thursday, the high court in London rejected Keep Abergavenny Livestock Market's argument that the plans breached a law dating back to the 19th Century that a market must take place there.
The site is due to be used to build a Morrisons superstore, along with a library and car parking.
The fight goes on to save a distinctive historic market town Abergavenny. Appeals Court bound! Retweet and join us.#aberfuture
Campaigners fighting to save Abergavenny's cattle market have vowed to appeal the High Court's decision.
The London High Court will decide on Thursday whether the cattle market in Abergavenny can be closed and demolished.