The number, I believe, is 85 where there's been revocation as a result of residency fraud.
Residency fraud can take a variety of different fashions, but essentially it is people who are claiming to be in the country when in fact they are abroad. At the moment, without exit controls, we have no objective way of identifying this. We're often required to go through passports to look at stamps and so on. Starting late next year we will start to have more effective information about people's entry into and exit out of the country.