i came back from a weekend away to find the shed door had been forced open. power tools and my cateye £45 light had gone along with a few other cycling bits but they didn't take the bikes. both were secured to the sides of teh sheds by a hasp which i got from the local DIY shop for £2 each.
Since the break in the shed door has been reinforced, i've bought a shed alarm from B and Q (£10) and a proper anchor Master Anchor (£15 ) from Band Q also.
oh and i've also put a sign on the shed saying it is alarmed
Even if they break in now i doubt they'll get the bikes.