There was one up at Green Lane School last night and two are on offer this very evening - both put on by the local Scouts.
One of these is at the 4th Worcester Park Scout headquarters in Balmoral Road. The other is at the Hook Road Arena and is being hosted by the 7th Epsom (Methodist) Scout group (details here).
So there is an event for you whichever side you are! I suspect I will be at the 4thWP one with family in tow... (if the rain stops...)
Or you could, as many people will, enjoy the various displays being put on by the neighbours...