Avoid at all cost
I have been with Exact since June 21, and have has a poor experience with them throughout.
They were taking pension contributions from me, after I had requested not to join the Smart pension scheme; after checking with Smart pensions no payment had been forwarded to them from Exact, I called Exact on four separate occasions to request a refund and was told someone would look into it and call me back, no one ever did.
Another time I submitted expenses and they deducted tax and NI, and paid these net to me, they also did this with my colleague.
I am now looking for another umbrella company as I have had enough of them getting things wrong.