Completely depends what you are doing now, if you are living at your parents stay there. Put the £1500 you would be spending renting away each month and look at it again in a years time when you have £23K in the bank.
This. The bigger your deposit the stronger your hand is, I would wait and save every penny you can
I would add a few things, 5k is not enough for a decent place, especially as post COVID most lenders want 15% deposit an if they do give you a 90% loan to value the difference in interest rate can be up to 2% higher.
The next thing I would say is what are you looking for, is this a home you can see yourself staying in for 10-20 years or one that as soon as your situation changes you are off. If it's the latter you need to be worried about the value staying static or decreasing, if it's the former then it's less of an issue. I say this because I bought a 1 bed flat in a dodge enough area, would never of raised a family there, but the location was perfect for a young bloke in his twenties. I got lucky the value went up (area got gentrified) but could of easily lost my bollix on it and to top it off my future Mrs hated the area and would never of lived there.
Also, its always a crap shoot, but we are heading into what looks like the mother of all recessions and landlords are hugely vulnerable. The market right now is been artificially propped up by the removal of stamp duty and the furlough scheme. If you time it right and have a strong deposit coming into the new year you could easily pick up a bargain.