Seamus,
I know someone working from a car using barrells and he got started for under £400. Invest in a decent pole like a Gardiner SLX 25 to start with, and get a medium supreme to go with it.
On many jobs, a trolley with a barrel on it is actually faster than a van mount...
You can start at any time of the year. The only time when we don't canvass is in December.
While you are learning, I would do the side of the house that has the sun shining on it first. Then you can go back when you've finished the house and the windows that have the sun shining on them should be kind of dry so you can check your work.
Get a basic, one page website set up, and have something on it so that the customers can sign up online to Go Cardless. Go Cardless will save you all the hassle of dealing with money and cheques and also checking your bank statements for bacs transfers. Go cardless will also save you all the hassle of debt chasing, collecting and you'll avoid non-payers.
Go Cardless is a good 'barrier to entry' onto your round. Make them sign up to Cardless before you clean their windows; and you will get committed customers who really want a window cleaner.
Be uniformed, get some magnetic signs for the car.
Don't do one-off's, hand them to another window cleaner.
Access is key. When you are canvassing, target houses with clear, open air access to the back via a garden gate.
Sign up to Cleaner Planner from the get-go; it will save you headaches from trying to manage a round manually.
Don't obsess over equipment. You need the basic kit, and you need to be using systems (eg. Go Cardless, and Cleaner Planner) that take some of the headache and stress out of running a business.
Be firm but fair with your customers.
Don't do inside work, hand them to another window cleaner.
Make canvassing easier by handing a flyer thru the door, and then door knocking a few days later, hold up the flyer (we clip it to a clipboard) and open with the line: "I put this through your door a few days ago, would you like a quote?"
Read these peoples back posts, they are close to 'legend' status in window cleaning ;-)
Ian Lancaster
Lee Pryor
Vin Kennedy / Perfect Windows
May the luck of the Irish be with you ;-)
OJ