I'm not familiar with this particular model, but as long as it's an "ordinary" remote (ie no fancy LCD etc), then your best bet is probably to get an "All-in-One" universal remote from Woolworths, Tesco etc.
The simple ones are about £10 and can be programmed for this and any other TV.
If you must have the genuine Phillips model, you might get a shock when you see the price!
Hi I found a place where they sell the orignal remote for my TV. They wanted £67 for it . So I decided to go and buy a Philips all in one remote which basically works most of the features of my TV and only cost £15