The first one is Ransomes Minor mk 7,the forerunner of the Marquis and Autocertes. I still use a mk 6, which had crank handle start and no land roll clutch ,but cuts really well and is a good machine to use . Much better than the two stroke Atcos in the next picture which are of the same era but of lighter construction. Often difficult to start when hot, with modern oils and plugs they can give years of reliable service.