Anyway, here are the ingredients. The honey cost me near enough £10. I know it's not the 'bees knees' but i've always considered Rowse to be pretty good stuff and have had success when using it in beers in the past.
I actually added the juice from 2 lemons in the end.

I added the honey, orange and lemon juice to a pan along with 1L of Sainsbury's Caledonian Spring Water. I kept the heat as low as possible and very gradually brought the honey up to 80c whilst stirring every few mins. It took around 30 mins (perhaps even more) to reach 80c.

Then I let it pasteurise for 20 mins.

When the pasteurisation process was complete, I plonked the pot into freeing cold water and brought the temperature down to 20c. This was then transferred into a 5L water bottle and topped up with Sainsbury's Caledonian Spring Water before adding the yeast. OG was 1098.
Here it is nearly a day later fermenting away nicely in my conditioning cupboard. Temp is set at 20c.

Plan is to let it sit there for a month then rack into a glass demijohn and forget about it for as long as I can.