We have evacuation drawing with in a comerical office building with an exiry date of 5 years (soon to expire) what is the the requirement here do we have to change these every 5 years and also our emergency plan manuals have the same expiry date is it a legal requirement to change these every 5 years or can we continue to use these as only the providers indication of expiry??

Article 15 of The Regulatory Reform (Fire Safety) Order 2005 requires you to have appropriate procedures, including safety drills, to be followed in the event of serious and imminent danger to employees and  relevant persons, (Relevant person are any person who has a legal right to be on your premises). The appropriate procedure is the emergency plan, which in your case includes a evacuation drawing and it is up to the employer (Responsible Person) to decide the content of the emergency plan. You do not require to have an evacuation drawing but where there are many relevant persons it is a good idea because you cannot effectively train relevant persons.

There is no expiry date for the emergency plan but it should be reviewed frequently to ensure it remains up to date. The evacuation plan is not necessary but in your case it may be necessary to understand the emergency plan manuals.

Check the link for more details.