No - as you can potentially utilise your personal allowance to offset against income taxed at source when paid by your agency into your company.

Yes. You can work through your limited company (PSC) or under an umbrella company. You may wish to seek guidance as to which will be the best solution for you.

IR35 legislation states that an end hirer must take ‘reasonable care’ in assessing all contracts, to establish whether the individual would be seen an employee when carrying out the necessary work. If they fail to take reasonable care, the end hirer will be responsible for calculating the deemed direct payment, paying it over and reporting the tax and NICs that result.