rotten window frame

It surprising that this window stayed in the frame as it's 8 ft high.
We are of course replacing the wood. It was put in by the son of a taxi driver from Glasgow a few years back. We sold the house to the father as a ruin and then bought it back. The son threatened to scalp me, something to with suggesting that driving his JCB into a tree was a bit careless.. It's a small house but they put in a enormous bath.