I am not sure that anyone could react in time to PVR and get their Gratuity tax free. This move would most likely be announced as part of the annual budget.
The Mail on Sunday had an article about it last weekend. It was not only the possibility of taxing a gratuity that is under discussion. There were other options such as leaving the lump sum tax free but forcing you to purchase an annuity with it also discussed.
Again I would stress that this will affect the whole country. The effects of their Airships lobbying would have zero effect.
Further to my last try:
http://www.thisismoney.com/20020926/pn53545.html