I few people here have mentioned Andica as being good and a reasonable price. Taxcalc is well known, but a bit more expensive. I've not tried either yet as I only got my Self Assessment Diploma in November and didn't want to do any SA's over Xmas/yeare end period this year. Andica is the one I am planning to try out. HMRC's website has a list of approved software you could look at. I notice that VT Software (VT Transaction +) are planning to introduce their own tax filing software by end of 2012, if this happens I will try that too.
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