Patio fruit trees in the lawn

in Fruit & veg
i had been debating weather to remove the lawn entirely but feel that’s a step too far. Instead I would appreciate advice on creating a mini orchard by planting four patio sized fruit trees: apple, pear, plum and cherry. They are on dwarf rootstock.
Saltaire, West Yorkshire
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https://www.theguardian.com/lifeandstyle/2012/nov/16/alys-fowler-step-over-apples