IR35 enquiries

Telephone

IR35 Helpline

For customers who have enquiries about the intermediaries (IR35) legislation
Opening hours
8.30 am to 4.30 pm, Monday to Friday
Closed weekends and bank holidays
0845 303 3535
Fax Number
0845 302 3535

Post

IR35 written enquiries

IR35 Customer Service Unit
Ground Floor North
Princess House
Cliftonville Road
Northampton
NN1 5AE