Come stay at the Greenest B&B of them all – Slack House Farm

At 400 metres up on the north Pennines, in one of County Durham's most spectacular areas of outstanding natural beauty, you can check yourself in to one of the country's few - perhaps only - "off-grid" B&Bs.

Ellie and Phil Langley have taken the notion of green tourism to the extreme by opening up their smallholding - a true model of self-sufficiency - to anyone willing to part with £27 a night.

If you ever wanted to experience life in a home which is powered by a wind turbine, solar panels and biomass-fuelled Rayburn then this is the place to stay.

And if you've ever wanted to try a compost toilet, well, you've found the right place too. (The two guest rooms have dual-flush loos, but the Langleys allow guests to use their own outdoor compost toilet should they so wish. And, yes, some guests have requested to do just that.)

Slack House Farm, Ireshopeburn, Weardale, County Durham.