The most important thing is that you will have to comply with part p, which realistically means getting an electrician in if you are not qualified yourself.
I beleive you have answered your question correctly though. You would have the ring into and a spur out of each switch. installing deep wall boxes will help with cable management. I don't know if you need fuses in your spurs or not if they finish in sockets then I think not as the fuse would be in the plug.
I guess you could put a junction box in and have the switch on a spur although again I don't know if it should be fused.
I like to have Swicthed fused spurs in line across the circuit above worktop height, with drops for single sockets to each appliance.
Kitchens come under special location, regarding part p, so this is notifiable work.
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