Built-in oven crisis - help!

[Morechocolateneeded]

So - our built-in single oven/grill has broken.
Looking online for a replacement, I see that our oven is somehow narrower and slightly less tall than the standard size. I literally can't find a single oven that would fit our aperture.
There's no solution to this, is there?
Short of destroying half of our kitchen (including the space for the mini- oven above, drawer units below and to the side, etc), all I can think of is to buy a separate oven unit and shove it in the conservatory or something - though we really don't have room for it. We are cramped as it is.
Any other ideas?!

Once you find the oven google it like mad as I bet you will get it cheaper online from a warehouse type place

www.neff-home.com/uk/productlist/exclusive/B1DCC1AN0B#/Tabs=section-technicalspecs/Togglebox=2127537278/

Niche dimension (hxwxd): 585 mm - 595 mm x 560 mm - 568 mm x 550 mm

Neff customer services on the phone are really good. They helped us a lot with dishwasher issues and suitable replacement suggestions

Not according to the "space needed" info from John Lewis.
I wonder what the difference between the Neff "dimensions" and cut-out is? I may need to contact them to ask.

Thanks again - the John Lewis price is cheaper (if the size works).

Ignore any retailer info, the manufacturer is the gospel truth. The niche dimension literally means size of hole required, the appliance dimension is listed separately.

There'll be plenty of others that fit too, but if you really want to believe that your house builder custom built narrow oven housing units then commissioned narrower ovens from neff to fit them than go right ahead.

I expect you're right - hopefully! I'll try to make some calls tomorrow - don't want to end up with a heavy item I can't return if it doesn't fit.

Ring your local independent appliance shop or oven repair guy - they'll probably know who make narrow ovens.