Defender TD5 Fuel Pressure Regulator

I have just discovered my fuel pressure regulator is leaking, but suspect it has been leaking for a while. Does anyone know if it could suddenly get really bad??

I need to do a quick 600km trip before fixing it. At present it leaks one drop every few seconds.

Dropped my 03 D2 off for it's 60k service today and found out mine needed replacing too. I also thought it was dripping oil as previously mentioned. Was charged $360, plus labour which was tied into the service.

Matt.