GBP Index based on a basket of the following currencies
EURGBP, 49%
GBPUSD, 18%
GBPJPY, 3.4%
GBPCNH, 9.0%
GBPCHF, 3.2%
GBPCAD, 1.4%
GBPAUD, 1.4%
Use this index with a moving average to determine when to go long or short on GBP pairs, except for EURGBP. If index above Moving Average you have the green light to open Long positions. If below Moving Average you have green light to open Short positions.
For EURGBP you would open Long if index is below moving average and open Short when index is above moving average