Hi Some of the locals have Shetlands, the croft next door has two also there's a breeder by the Loch, so it's not like there would be no advice. The main thing the worries me about Shetland and Hebs is everyone tells me there escape artists, the previous owner had one of the pervious apparently without any problems. Any thoughts. Clive
Why has my quote done that
I have never had Shetlands, or Hebs, or Soay escape. The only sheep which once wandered out onto the road were some Jacobs - and that was because someone had left the gate open (they didn't go anywhere, just stood around looking gormless

). The Jacobs also jumped into the next paddock when our Hebs first arrived, sussed them out then jumped back into their own bit
On the other hand we know someone who relied on a drystane dyke, which ran straight uphill, to keep a couple of Hebs in. They quickly worked out that they could jump it by starting at the uphill end, and were off and away over the hill.
But if you have sensible fencing and make sure the sheep are happy on your land then they won't jump. We use two strands above the mesh but that's to stop the neighbour's cattle reaching over, not to keep our sheep in.
Someone already mentioned the idea of starting with a selection of wethers so you can see how they behave, without having committed yourself to one breed - they will all be eaten anyway, so if they don't suit it's no big deal.
Hebs can be crossed with Cheviots and produce a pair of good-sized white lambs- they are a very milky breed (the old crofters' milk sheep) so the cross-bred lambs grow quickly and should finish in their first autumn, depending on your grazing (pure-bred take 16 months).