Put the water, sugar, lemon peel and lemon juice into a medium saucepan
Split the vanilla pod horizontally and add to the pan. Place over a moderate heat to dissolve the sugar and heat until just simmering
Peel the pears, cut in half and carefully remove the cores. Add to the pan and let cook for 10 minutes
Cut the peaches and apricots in half and remove the stone if it will come away from the flesh easily. Add to the pan and cook for 5 minutes
Halve the cherries (leaving the stems intact), add to the pan and cook for 2 minutes
Take the pan off the heat and leave to cool completely
Remove any stones from the cooking liquid if necessary. Remove the vanilla pod, scraping any seeds back into the pan. If desired, remove the skins from the peaches and apricots - they will just slip off
Chill until required - remove from the refrigerator 30 minutes prior to serving.
Keeps, refrigerated, for up to 5 days