The sale of our first house has fallen through and in the mean time we have moved into our new ppr house, is there a time limit with revenue for holding onto the 2 houses at the same time, the first house is up for sale again and the way the market is at the moment, it could be a while before its sold.
12 months before the gains become liable for CGT, and even then it's only proportional from that point on. There's loads of threads where the details are discussed.