double light switch

I opened up this double switch to add an earth wire from backbox to faceplate, and a wire came loose , the one I’ve highlighted in pink. I thought it went in the common at top left so I put it back there, but when I turned the electric back on the circuit breaker was triggered. Then when I took...

Hi, I have messed up our living room double light switch a little bit whilst trying to fit a new double dimmer. Both lights are on the living room ceiling left and right from the door when coming in. Made the beginner mistake of not remembering how the wires were connected when I took the...