I get where your coming from sadly. I understand it would be a lot more saving to achieve it now that prices may have risen more in the new area your looking at.
The house i currently live in was bought for £110k in 2002, i paid £263k in 2015. Yes that's a heck of an increase for where i live but compared to what is currently available now around the nearby new housing developments this house is actually cheaper, bigger and closer to amenities generally.
My brother and wife have moved 3-4 times, each time the property is sold for more than they paid.
I know i will be in a minority saying this but we need a market crash tbh, or some regulation on the values of property. Estate agents & surveyors seem to be forever increasing values on property to increase profits and make the seller happy doing that as well as finding scrupulous buyers wanting it.
I find this topic of property prices and mortgages is never ending.
i like reading about it all but the actuality of how the system works is shocking. Even the recently mentioned news of 5-7x salary borrowing is stupid and horrendous.