In order to Stop Brexit, we need to ensure that the Brexit backing parties get as few seats as possible. The only way to achieve this is to make sure that you vote tactically. To vote the strongest remain or 2nd referendum backing candidate in your area.
There are quite a few tactical voting websites, they don’t always agree on who you should vote for. Some have just simply taken the results from the last election and based their recommendations on this. Others claim to have done extensive surveys of the population’s voting intentions.