British Hypertension Society - home blood pressure monitoring diary. Send to patients with home BP machines - gives all the instructions. They can then drop readings in, or send in the average reading.
Information about how to check your peak flow and how to complete a peak flow diary. The Asthma and Lung UK website more broadly has a lot of information about different lung conditions, and a helpline with trained staff who are able to provide advice about management of different lung conditions.