This sounds similar to what happened when the catalytic converter was stolen from my FR-V. Insurers wanted to write it off, but I successfully challenged that and in the end they agreed to give me a cash payout which I could use to have it repaired.
However when I spoke to some local mechanics, none of them could get the parts so I did some research and ordered the parts myself. If it's exhaust parts you're after, try Motor Parts Direct (mpdonline.co.uk) or https://www.onlineautomotive.co.uk/car-parts/Honda/CR-V/2.0L/Petrol/Premium/Exhausts/Exhaust-System/HACRV20 3008A00/1/52
You'll almost certainly find the sensors on eBay. Or once you know the part numbers that are compatible with your car you can Google around to try to find the cheapest place that sells them.
If you want a one-stop-shop, https://catman.co.uk/ will sell you everything you need though in my case that would have worked out more expensive.
I know this isn't quite what you were looking for but I'm posting here as it may also assist potential buyers.