My pricing is devisable by twenty so I don't have the problem but I think you handled it well and he was happy, if not you could say I will give you a ?10 discount if you visit again. As you're not a shop the clients can't always expect you to have the correct change. I wouldn't worry about it.

I'd have a ?10 handy.

When going outcall I always have an emergency cash purse containing a few ?1 coins (can be used for parking), ?10 note and a ?20 note, plus 1 credit card. The ?10 and the ?20 can be used as change if need be. I don't make the location of the purse obvious, it's a really boring colour, it's hidden by the paraphenalia in my bag and the fee goes in a different place.

Might be worth having a drawer with a ?10, ?5, ?20 in somewhere that isn't in a direct line to the door.

Nope. I'm a hole to rent not a hole in the wall 

I receive it as the tip it seems to be. How nice, thank you sweety. 

It s happened to me twice today and both tips were gratefully received   

Most cash based businesses recognise the need for change and keep some accordingly - I don't really see why ours is any different. If I didn't have the correct change for something in a shop or a pub I wouldn't expect to just give them the next note up and walk away.

Cash machines don't always give out tens so I would be keeping one around just in case. If I wanted to get ?10 more per booking out of people I'd just put my rates up .

The other day a guy came with 2 50s and wanted a half hour. I had no change and it was a Sunday so no corner shops open. I begrudgingly offered a quickie for 50. Felt so shitty about it.

I charge in multiples of 20 for this reason.

I do the same if i have no change. Either offer extra time , or if Re often they just say don't worry about it!  I do try to have 15 knocking about 10 + 5 ^.^ xxxx