The alternative is to bury an architrave switch mounting box in the wall to take the terminal connector strip, and secure the light fitting centrally over this, so that the securing screws can go into wall plugs fitted in holes, which you drill in the wall either side of the box.
The alternative is to bury an architrave switch mounting box in the wall to take the terminal connector strip, and secure the light fitting centrally over this, so that the securing screws can go into wall plugs fitted in debt, which you drill in the wall either side of the box.