We've been providing SaaS for about 5 years now and currently bill by invoice, from the UK too. I've been looking at credit card billing for a few months now an

We've been providing SaaS for about 5 years now and currently bill by invoice, from the UK too. I've been looking at credit card billing for a few months now and initially thought I'd use Chargify however now we've pretty much decided on using Recurly. Most likely for us we'll use Recurly + SagePay + Elavon. Will end up costing about £60/mo in costs for our first few customers to pay by credit card but then its all worthwhile. Why Recurly and not Chargify? Recurly stores CC data so if we want to change payment gateway we can. Recurly features VAT support and has a panel where customers can log in. Yes it doesn't look good when customers log into yourname.recurly.com. But what we plan to do is put this in an iframe, add an SSL cert to our site and using the auto login token from the Recurly API so a customer clicks on account and it looks like they're on our site. Custom CSS is all thats needed to make it blend in. I would be very interested to hear what billing solutions other UK companies use that provide SaaS!