We have decided to return to Hanoi in 3-4 weeks time. We are British. As our passports are currently away at the Chinese Embassy awaiting a Chinese visa, we need to organise a double-entry visa to Vietnam. First entry will be by plane to Hanoi. The re-entry will by train from China 2-3 weeks later. However, we read that many of the companies who arrange these special visas are bogus and even the Vietnamese Embassy so advise one to be very careful when doing this online.
Please ASAP can you recommend ideally a UK based company that we can safely use for this purpose. A Vietnamese company is an option.