241 ex-EU

The IT can be a bit glitchy – it’s possible that you could book by calling BA, but people have found that the calculation of the surcharges can be both advantageous and disadvantageous by doing this.
Also check the dates and times you’re entering to make sure you’re giving a long enough connection time, or not too long. Use the “stopover” facility as sometimes this makes it possible to find a route that otherwise results in “computer says no”.

Wouks be helpful if you have full daursiks if the route.

If the long haul sector isn’t on BA then I do t think you can use a 2-4-1

It is definitely possible to ex-EU a new type companion voucher. I have one and have booked an itinery. There are a few gotchas:

– the city-pairs for origin and destination must be for sale for cash — in the cash of MAD UVF, they are
– the connecting flights need to be on BA planes, not, in the case of MAD to LHR, Iberia nor a BA codeshare

I have no idea why what you are looking for will not show, but check MAD LHR first to ensure the dates you want have the required Avios seats available on an actual BA plane.