Hall and Landing lights stopped working

sounds like there is simply a loose connection up at the light fitting this would also explain the circuit breaker tripping. I would advice getting a qualified person to check it out but if you decide to tackle job yourself then cut the power off at the board and check connections are tight

Hi, Try the following only if you can do it safely and without risk to yourself and others. Take out the bulbs from the lights that are not working. Turn on switch and using a voltage tester ( a bit like a fat yellow fountain pen ) to see if there is voltage coming up to the light. Your tester will glow continuous red if there is voltage, otherwise it will just flash intermittently, do this with both lights. If voltage is there and switches on and off from the switch, that indicates that there is a problem with the return side, a loose connection typically. Check all your connections with a suitable screwdriver. If voltage is not there, then the fault is likely to be on the live side, burnt out switch/dimmer,loose connection in junction box, burnt or overheated pendant. Remember also that brand new dimmers can be faulty. Don't throw away your old dimmer just yet. Check that your circuit breaker is OK and all connections are tight. Good luck. Kevin.