Only 11 immigrants volunteered to leave Britain after seeing the Government's now-scrapped "go home" vans, an evaluation report has revealed.
The broader pilot, which also included postcards in shop windows and adverts in newspapers, led to 60 voluntary departures. A further 65 cases are currently being progressed to departure.
In addition, the report reveals the phone number used in the near £10,000 campaign, dubbed Operation Vaken, received a total of 1,561 text messages - but 1,034 were hoaxes.
Around 17 hours of Home Office staff time were required to deal with the hoax messages, the report added.
More top news
Police said they are "extremely concerned" for the welfare of a "vulnerable" mother and her two children who have gone missing in Bexley.
It is hoped the 7,400-mile journey will become a cost-efficient and time-saving way of transporting trade between China and the UK.
The Supreme Court is set to decide on whether disabled travellers are legally entitled to have priority use of wheelchair spaces on buses.