On Sunday I split my one colony using what is known locally as a "flyer split" (put the queen, some bees and a few frames of mostly closed brood at the original location, at midday, and put the rest of the bees and frames somewhere else in the apiary, queenless). On Monday I returned and added a honey box on the flyer hive and gave them sugar water.
The queenless box (at new location):
The flyer box (with queen, at original location):
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Also on Sunday, I tried to introduce an Italian bee into a hopeless queenless colony, but it turned out that the beek that I got the bee from uses German frames (they're 10 mm wider than the Dutch frames, although otherwise of similar dimensions), so I could not fit the bee into the box that I was going to use with the newspaper method. So... now I have a tiny Italian colony with an unmated F1 queen, and to the queenless colony I gave extra nectar, extra pollen, and a frame with eggs.
The queenless Buckfast colony:
The new, unintended Italian colony: