[Does this contract meet the requirements to be enforced by a court](https://docs.google.com/document/d/17axpOjt3IKJSsX3ofCxW7NFUtOZjHGjxpmLQUfylQyM/edit?usp=sharing)? If not, what challenges might be raised?



> 
> ### Promissory Note
> 
> 
> Principal Amount: £500.00 GBP
> 
> 
> Date:
> 
> 
> 1. For value received, the undersigned (the “Promisor”) at \_\_\_\_\_\_\_\_\_, promises to pay to the order of \_\_\_\_\_\_\_(the “Promisee”) at \_\_\_\_\_\_\_\_ the sum of £500 shall the Promisor fail to meet his target of 47.5 work hours per week between 6th - 26th June 2016.
> 2. Sum shall be paid in full within seven days of the end date of said period.
> 3. This agreement will be governed and interpreted according to English law. All disputes and claims arising under the Agreement (including non-contractual disputes and claims) will be subjected to the exclusive jurisdiction of the English courts.
> 
> 
> Promissor (name):
> 
> 
> Promissor (signature):
> 
> 
> Date:
> 
> 
> 



Is this contract valid?