I feel this coming along some day soon, from a kitchen near me:
https://twosleevers.com/pressure-cooker-keto-broccoli-ham-pepper-bake/
(For half and half 2:1 single cream:full fat milk works. Half and half is allegedly typically 12% fat, so Lidl's 10% yoghurt might also work as a quick swapsie.)
I noticed that Amazon.com will deliver the mini instant pot to the UK. Shipping fees a bit hefty, but having serious thoughts about it.