-Is it usual to provide/prepare lunch for the nanny or for them to bring their own?
You provide but they cook/make it from ingredients you have. They would probably eat the same as your 3 year old, so could cook a meal for your children plus a portion for themselves.
-Do I prepare meals for the kids for the nanny to heat up, or does she do it?
Nanny makes meals. If you meal plan, then discuss what meals will be made and come up between you with some recipes if necessary.
-We probably wouldn't be able to provide use of a car. I go to some groups with the kids that are a half hour walk away-is it reasonable to ask her to do this?
Yes. A live-out nanny would be needing to get to you anyway, so they may well drive their own car. You may want to consider them using their own car for transporting your children (mileage payment would apply).
-I would be looking for the nanny to work 7.45 to 5.45 3 days a week but I also do some out of hours work. For example, about once or twice a fortnight I work a late day and wouldn't get back until 7pm or so,
Be as precise about the timing as you can. If you won't be home by 7, then have nanny work till 7:30. Out-of-hours work sounds like you may work in healthcare - are rotas planned in advance? Is there a cycle? Thus will you know these longer days quite some way in advance, or do they happen at late notice?
- sometimes I have days off in the week to compensate for weekends worked and once a month I work 4 days.
This 4th day is where I think the biggest problem will be. Whilst you can find a nanny who want's a 3 day a week job, a 2 day a week job, a 4 day a week job, finding someone who want's a 3 day job but for one in 4 weeks wants 4 days is a bit of a tall order. You may get lucky and find someone who does not do any other work, or have any other commitments on the days they don't work for you and thus could do the 4th day but many nannies would be combining jobs together, or have other commitments which may make the 4th day tricky.
Is having a 4 day nanny out of the question? Having a day to do whatever you like is a luxury but it may be something to consider, especially if there are things you might be wanting to do without children - training courses, studying, getting your hair done, gym personal trainer, shopping.
- Is it normal for nannies to have some flexibility and work extra hours (paid and mutually agreed of course), or would it be taking the piss to ask them to do this?
Yes but there is a limit to that flexibility, they have a life of their own and they may have other work. So it needs to fit with their other commitments.
-can anyone give an idea of the going gross hourly rate?-we're in Edinburgh.
In Aberdeen area it is £8.50-£10 gross per hour. Edinburgh I expect may be similar though may be a little more.
NannyJob: Edinburgh, Live Out - not many jobs listed at time of checking, only one gives salary £10 gross. So I would say go for £8.50-£11 as a range.
-how far in advance should I advertise the job? Back to work mid-January.
I would start now, then modify ad and place more ads in November. You are aiming to interview in November, agree contract by early-mid December. Mid-Dec to Mid-Jan may be a very quiet time for recruiting, xmas gets in the way.
As you are in Scotland, if you intend to use Childcare Vouchers or the new childcare scheme in Sept 2015, then from what I understand you need to recruit via a childcare agency. Some agencies may do this for you even if they don't find the nanny for you. SCSWIS - Care Service Search, use type: Child Care Agency
SuperMums is in your area. May be worth contacting them as they provide permanent nannies and do an ad-hoc service, which may help resolve the 4th day issue if you did not mind having someone different on those occasions.
Just found an ad from an agency where live-out nanny, 20 hours a week, is £9-10 Net. So maybe think of having your salary budget up to £12 gross.