Hi OP. I'll start by saying I think your house is lovely, but the lack of floorplan is absolutely glaring, and even though I live in London, the price seems "toppy" to me (word learnt from an estate agent!).
I went through the photos (look, it's pissing with rain and I'm trying to avoid doing the ironing...). I'm sure others have made all these comments before, but:
Photo 1: Jetwash paved area, pots with plants/flowers either side of the door. Have all the windows the same - blinds up, lights on or off. Redo photo in sunny weather.
Photo 2: Get rid of dustbin from shot. Jetwash green mould off connecting wall and garage wall.
Photo 3: Is that a working fireplace? If so, get a log basket to make it clear: if not, get rid of the wood and put e.g. some candles in it. Or at least fill it up completely.
Photo 7: Get rid of hops, light cooker alcove, put away stuff in conservatory and whatever is on the chair seat nearest the camera.
Photo 8: Take all stuff off fridge, hide stuff from top of cupboards esp air freshener, put away cooking stuff on brick shelf.
Photo 10: Lights on in kitchen, get rid of toys.
Photo 12: Tidy up wiring muddle on bedside table, remove stuff on floor, take wrapper off lampshade and plug it in.
Photo 14: Hide toys. I'd remove the mirror next to the door as it's just reflecting the radiator.
Photo 15: Some form of bedside light needed.
Photo 18: Remove all toiletries and toys.
Photo 19: Needs retaking on a sunny day. Get a couple of big pots with bright flowers in them. Get rid of the grass that's growing on the wrong side of the sett stones. Jetwash the patio.
Photo 20: Jetwash the path. Tidy the stuff that's by the shed away. Think about painting the shed, because it looks like the wood is already soaking wet and starting to rot.