Well Hello...
I am also an Englishman (well, half English!) living in The Hague. I fly at the Vliegclub Rotterdam (
Vliegclub Rotterdam - Home)
If you have a car, its a 15 minute drive; if not, its about 45 minutes on public transport. Be warned though; stifling Dutch taxes and legislation seem to have combined to make Holland certainly the most expensive place that I have ever flown. All airports are towered too, so it's impossible to get the crucial experience of non-towered fields in the country; you might have to go down to Belgium for that!
The only other places that might be within range for you are Lelystad, which certainly has training available, and maybe Hilversum and Seppe; but I'm not sure if either of these last two have any training facilities.
If you would like to come flying any time, just let me know; it's always nice to have company and I fly quite regularly.