Losttheplot

The good thing about Crystal Palace is that its digital signals can all be picked up with a Group A antenna. The antennas arms are spaced and of a specific length to make the antenna particularly good at recieving certain frequencies. An indoor antenna will be a wideband antenna, not particularly good at any one set of frequencies so a bit hit and miss.
I'd get a small group A antenna and build some sort of stand for it.