DH and I have been meaning to move for a little while and have finally got ourselves together. Found a nice place and got a mortgage in principle for 300k. All great so far but now am all panicky. We are both 40 with 2DC 1 and 3. We need a bigger house and house prices in London are high, but it's a lot of cash to take on at our age. Anyone got any advice or happy stories of it all being ok?