Well this is nothing out of the ordinary. I'm willing to bet that these women have gone underground and will surface at an opportune moment to seek asylum or else immigration into UK.
A classic case of "Brides marrying NRI's earning 5-6 figures". It's a shame that they have to resort to something like this. A few months ago, some Pakistani Club cricketers (Men) disappeared in a similar manner. Is this some kind of trend? Very filmi, indeed!