I'm a UK resident entering into employment with a US company. They're not currently registered for PAYE in the UK, nor do they yet have a UK entity, and they would like to pay my salary directly from the US entity.
What are the tax implications for me of such an arrangement, compared to being paid by a UK entity? Is this arrangement against my interests, and should I insist that they establish a UK entity and register for PAYE?
(Alternatively, does such an arrangement in some way reduce the overall tax burden that my employer and I face, perhaps by reducing the total amount of National Insurance contributions we must pay, and should I therefore want it preserved?)