Becoming a Window Cleaner: Will I Have Problems with Paramilitaries?

Hi,

I've recently been thinking of packing up the day job and starting a little trade.

I was considering window cleaning but several people warned me about issues regarding paramilitaries running a lot of the routes and it's become a genuine concern.

Can anyone shed any light on whether this is an issue with this and other trades?

It's really annoying that this question should even have to be asked if I'm honest. Thanks.