Hello, my name is ***** ***** it is my pleasure to assist you with your question today. As you have worked there for 5 years the employer must give you 1 month, plus an additional 5 weeks' notice on top of that. They can indeed force you to take your holidays as part of your notice period and all they have to do is give you notice that is at least twice as long as the leave to be taken. So for example if they want you to take 10 days' holiday they must tell you of this at least 20 days in advance. You cannot challenge this unfortunately so if the employer has given the correct notice period the leave must be taken.
Hope this clarifies your position? If you could please let me know that would be great, thank you
Thanks Ben for the clarification, much appreciated.