Hi Elvolcan,
When the FEO came out for a visit she said to put it in cupboard,but when i explained to her that the cupboard contained
the mains electricity for the house (so it was unsuitable to drill wall).
She then said she would be happy if it was fitted in an corner,as this would deter a bar being used on the lock,atb NID.
ps.AT THE END OF THE DAY IT ALL DEPEND'S ON WHO YOU GET AS THEY ALL HAVE THEIR OWN IDEA'S,best of luck,here's a couple of pic's,fitted in external corner.