The advantage of the hemnes day bed is it can convert to a double so could last until adulthood in theory. Would you/he consider a midsleeper? There are loads on Wayfair (with good reviews). Or if you have space how about getting him a double bed? https://www.notonthehighstreet.com/cuckooland/product/four-poster-king-bed-with-storage-and-shelves-in-white?istCompanyId=aa76f5e6-d733-4e56-8409-574cea196cc9&istItemId=xmxqqlqmlp&istBid=t&gclid=EAIaIQobChMIsNL0_MvS2AIVBbftCh3chQwaEAkYDCABEgKgj_D_BwE&gclsrc=aw.ds&dclid=CLHk74LM0tgCFcaxUQodgwICeQ http://www.ikea.com/gb/en/products/beds/double-king-size-beds/brimnes-bed-frame-w-storage-and-headboard-white-lur%C3%B6y-spr-59124616/

Hi. It’s called Lotus wallpaper by Galbraith & Paul. Here’s the Houzz tour: https://www.houzz.co.uk/magazine/my-room-an-extension-gives-a-period-home-a-relaxed-family-space-stsetivw-vs~118161334

Possibly an old elica model with a name like cappa cucina, did find this though https://appliance-source.co.uk/luna-island-180-cooker-hood?utm_source=google&utm_medium=shopping&utm_campaign=google_shopping&gclid=CjwKCAjwgdX4BRB_EiwAg8O8HVguPpji_xAzigR_RdZCpsOYmbQWyNPe-p-z6EkjjUTHYOTQaWOhThoCrzsQAvD_BwE which might be of interest

I assume you’ve tried B&Q? They do sell just doors if it’s still in manufacture. Otherwise there are plenty of door suppliers online and you just have to find the nearest match. You can get paint colour matched at B&Q if colour is not quite right. Found this one in their clearance sale which probably means stocks are very low.