Not so much the national companies, but local to us we have had two builders that we did a lot of work with go under, one owing me £1000+ for office cleaning work

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Also the local Kia garage, who we do the showroom windows for closed shop yesterday, luckily for us they pay on the day so owe us nothing.
There are also two pubs who we do annual cleans for, who have cancelled their January cleans and are sound like they are on the brink of closing.
We've had three cancellations for domestic window cleaning over the Christmas due to people being made redundant.
We clean the windows on the local Argos on a weekly basis so I'll be keeping a close eye on them, though we're only subbies to the main cleaners so it'll be them I chase up.
I was in HMV last week and they were selling 3 x DVD's or CD's for £5