Hello everyone. I am probably in the wrong place but a little confused.

I booked a trip with expedia going Bristol to Frankfurt and return - thought I was booking a Lufthansa flight but it turns out its BMI regional.

I cannot find this airline in the list of "airlines and mileage programmes" so am posting here.

I am fairly new to flying but have flown with BA before. With BA it's easy to manage your booking, choose seats etc. I can find no way to do this on BMI. There is a "bookings" tab on the website but it doesn't seem to do anything in any of the browsers I have tried.

Is it actually possible to pre-select seats or is this all done at check in ?

If at check in can I do it online? According to Bristol Airport website it is only possible on the Aberdeen route. But I can go through the motions on the BMI page, just get a message that check-in can only be done 48 hours before. I don't want to get to the airport and find most of the seats gone, and get split up from my companion.

Any advice greatfully received