SJD. Again, not cheapest and I keep getting offers from others or suggestions from friends to use theirs as they’re cheap, but SJD do a comprehensive job and really know their stuff regarding the contract market, IR35 etc. Their ability to constantly bug me to do stuff is also welcome as I’d otherwise put it off and forget 😀
Bit out dated using speadsheets compared to some that are using third party online services like FreeAgent, though I feel some are using those services to do their job for them.
On the other hand SJD are going or have gone “online” with their own solution. Though I’ve yet to work out how to access it.
I find contractoruk very pessimistic. Constantly posting news articles claiming bad things will happen after picking up on some rumour, but they don’t. Often they’ve put 2 and 2 together to get 5.