Replacing Chain

[Dead Eye]

Hi all, trying to replace the chain and I've hit a snag whereby the chain tool I bought is a load of crap... I can't get the pins to line up properly on the rivets to break the chain as they just slip when you apply any sort of pressure

Does anyone around the Chelmsford / Essex area happen to have a grinder / cutter / bolt breakers (or something) that I could borrow in exchange for beer tokens - need to get this work done ASAP to get the bike back in for an MOT retest without incurring further charges