[Closed] What Singlespeed commuter frame 26" or 700c?

Hi,

I am building a bike for a friend, for commuting shopping etc. What it needs:

-sliding dropouts
-V-brake and disc mounts
-rack and mudguard mounts

Also preferably:
-steel frame
-26" as if they want suspension forks at a later date they are easier/cheaper to get hold of.
-available to buy as a frame rather than complete bike

Anyone got any ideas? I have thought about on-inbred but the geometry might be a bit slack for this sort of use. We are talking sensible price range so around £150

Thanks