Too late now, but your update of the front of the house makes it look depressing, dated and unwelcoming. It's also full of weeds, which make some people think the rest of house probably won't be well maintained either.
Put any 'extensive' renovations out of your mind. There's always a ceiling price on property. No amount of renovations will make the sale price go above that. Unfortunately, none of the photos make the property seem attractive or somewhere I could make a home. You've got brand new floors throughout, which look appealing, but everything else goes on personal taste e.g. I'd rip out the cheap bathrooms and the carpet. I can't actually tell what I would do with most of the rooms, because there's limited furniture and what is in place is unwelcoming and still doesn't tell me, for example, is the room with the IKEA chair the lounge room, or a dining room with an inappropriate table? The house also actually looks pretty small from the photos. The lounge room doesn't look particularly big and I wouldn't count attic rooms as proper bedrooms. (The previous photos from, presumably, when you bought it, show the size of the rooms in a much more positive light.)
Unless you live in a particularly expensive part of Swindon, there also seem to be loads of 4 bedroom detached houses in that area that are significantly cheaper and ready to move into.
So, I'd stage the rooms so that you can tell what they might actually be used for, clean the front of the property (no weeds etc), put some large planters with vines or tall shrubs to hide that massive blank wall, put some pot plats etc in the front garden area you've paved over; and have new photos taken. You may also need to reconsider the price.