I’m no expert on this but didn’t want you’re question to go unanswered so I did a bit of reading up. Lead is indeed dangerous stuff, especially for young children and pregnant women. As far as gov advice says you’ve done all the right things, damp wiping everything using a vacuum with Hepa filter etc. I do hope whoever sanded it was wearing the appropriate mask and goggles. Having said that, lead paint is quite common in older properties and I think I read somewhere that it’s about a sanded area of 6sq ft before it can reach any dangerous levels. Years ago decorators and d.i.yers never give it a thought and had no protection whatsoever and they haven’t dropped dead from lead poisoning. Unless you’re children have been physically licking the dust then I shouldn’t worry too much. Interestingly lead in the blood stream acts in the same way as calcium. The brain mistakes lead for calcium and processes it in the same way. If you’re concerned for you’re children (understandably) try upping the intake of calcium for a few days. More milk please:) As for continuation of the decorating, if you want to strip off more paint then use a chemical stripper such as Nitromors or if the sanding is finished then paint over it to seal it in. Spray the carpet damp before removing to minimize any spread of dust and wash any bedding, clothing etc. with detergent. Do hope this helps to put you’re mind at rest.

Do you have any photos? If you have antique chest and mirror I would couple that with some Textured Gold Curtains, a fluffy dusky rug, satin pillows in gold possibly few round ones on top, a HAVILL Yellow textured bed throw ( you can get this one from Habitat, a couple a minimalist bed stands in solid wood ( I would have to see the existing setting to pinpoint exactly what style ), I would add a few framed pictures with gold or yellow tones and a mini green tree or plant to stand in the corner. I think pictures would help greatly.

I also think it is a little low but it really depends on what needs doing. If you have to replace every wire in the house it is not enough but most likely you just need to add additional sockets, add spotlights in key rooms like kitchens and bathrooms, add smoke alarm wiring, additional power to the kitchen as we tend to put more appliances in our kitchens now and replace the fuse board. If you also need to move the meters or the fuse board if you intend to add things not previously considered such as under floor heating, outdoor lighting, extensions this will push the price up further. I would likely be budgeting £8000 unless you really want to go to town.

Have you thought about painting the wall behind that beautiful bed a different colour (maybe the soft pink suggested previously)? At the moment the bed disappears a bit against the walls, which seems a shame. I think pink could work rather well with the dark grey carpet, too.