TAV Havalimanlari Holding

All four unsuccessful bidders in the tender for a 35-year concession contract to run Sofia Airport have filed complaints against the Bulgarian transport ministry's ranking of the offers, data by the country's competition authority shows, reports SeeNews. 

All five applicants were allowed to participate at the concession procedure for Sofia Airport, it became clear after the bids of the applicants were opened at the Bulgarian Ministry of Transport.