Hi all could someone advise me on if it is possible to change this light switch to a new one that I have already bought . The one in the picture is for 2 way switching on an upper landing level with the other switch on the lower landing level - it operates the lights on both landings only, but the lower landing switch also acts as a 2 way switch for the light at the bottom of the stairs on the ground level if that's relevant . The new switch I have only has three terminals, Common, 1 way & 2 Way. The old switch in the picture is feed by old 1.5 twin and earth I'm just a bit confused on what to put where on the new switch - hope that makes sense ! Many thanks for any advice offered. I'm not an Electrician but I am confident in working with basic stuff like this safely, If there is any question this is not a simple 'fix' I will call a qualified spark our usual one is not available at the moment for at least 6 weeks though hence asking as the Mrs is nagging me on when it is going to be sorted lol