>certain circumstances (such as where you breach this Agreement)

It concerns me, as this still gives them full power to terminate the agreement immediately anytime they want. They never define what "certain circumstances" are, rather, they just provide one example.

EDIT: I would just like to say that I was mistaken. See the reply to my comment. That said, the US terms differ in an important way.

If you click 'Complete details' just below you will be provided with a full list of the circumstances in which they can terminate with immediate effect (although I acknowledge that the ability to terminate simply because a card network/issuer requests this is not particularly transparent (but understandable)):

- we determine in our sole discretion that you are ineligible for the Service because of the risk associated with your use of Stripe, including without limitation significant credit or fraud risk, or for any other reason;

- you do not comply with any of the provisions of this Agreement, or

- upon request of a Card Network or a card issuer.

I see. I was mistaken. I didn't follow the Details link. I did notice something equally concerning on US one

On the US terms, I see the following sentence:

"We may terminate this Agreement and close your Stripe Account at any time for any reason effective upon providing you notice in accordance with Section A.15 above". It goes on to copy what the UK agreement had, but that one didn't include this sentence.

I wonder if they could be sued for that. IANAL but afaik US contract law states that vagueness in contracts always benefits the party who did not write the contract. The vagueness may be used to your advantage to indicate that they didn't give you the two months you expected.

Is it against the TOS to route half of the payments to stripe and the other half to another payment processor in order to mitigate the problem of being shut down ?

With paymill looking like a stripe clone, it may be a good solution to split the revenues stream.

That says UK.