I play for the same team as Dan W and actually did give up a saturday to umpire (gutting as I had a game rained off either side too!) but there's a reason why we have to have this....
Unfortunately the 1st XI had to supply an umpire (league rules) which isn't a playing member of the team. The simple answer would be to find someone who would bge willing to become our club umpire, now if anyone else here has ever tried doing this in London they would appreciate how hard it is, especially as a young team with no "Older" members who have retired from the game. Thankfully they got promoted and now have league supplied umpires....the bad news is that our 2's team now have to supply a non playing umpire - again league rules.
Another Key factor was that we asked the league to supply us with "Neutral umpires" on a few occasions, as they have a pool, we had them allocated a few times, and they promptly pulled out.....cheers.
If anyone can see a better solution I'd love to hear it as it was discussed at great length at our club AGM last night.....
Liam