Sleep to Lower Elevated Blood Pressure

Inclusion Criteria: * Signed written informed consent * ≥18 years on entry to study * Average automated Systolic Blood Pressure (SBP) monitor readings between 130 - 160 mmHg with average automated Diastolic Blood Pressure(DBP) monitor readings \<110 mmHg on three occasions, measured in a valid standardized manner while seated, or average Ambulatory Blood Pressure Monitor (ABPM) SBP reading between 130-160 mmHg with average DBP reading \<110 mmHg. * Self-reported difficulty getting to sleep (defined as usually taking more than 30 mins to get to sleep), and/or staying asleep (usually waking up more than once per night) for at least 3 months duration * Internet access and self-reported competency in using the internet Exclusion Criteria: * Receiving \> 2 antihypertensive medications, or recent change in antihypertensive medications (within previous 2 months) or planned change in antihypertensive medication in next 8 weeks * Previous history of myocardial infarction, ischaemic stroke or transient ischaemic attack * Previous history of congestive heart failure * History of dialysis for chronic renal impairment or evidence of chronic kidney disease (eGFR \<60 or albuminuria). * Known history of diabetes mellitus * Current ongoing sleep hygiene education or sleep related cognitive behavioural therapy * Ongoing involvement in night shift work * History of obstructive sleep apnoea (OSA) and previously received or currently receiving treatment for OSA (patients with a history of untreated OSA are eligible for inclusion). * Known history of sleep disorders (i.e. narcolepsy; hypersomnias; parasomnias such as sleep walking, night terrors, recurring nightmares; periodic limb movements/restless leg syndrome; circadian rhythm sleep disorder) * Unable to follow educational advice in the opinion of the clinician * Baby or young children at home that wake during the night * History of bipolar affective disorder * History of psychosis * History of major depression (defined as depression requiring hospitalization in the past or visit to psychiatry outpatient clinic in the past 3 months) * Unstable depression (unstable will be defined as changes in antidepressant medications within the last 3 months - i.e. start, stop or change in dose.) * Unstable anxiety disorders/panic attacks (unstable will be defined as changes in medications within the last 3 months - i.e. start, stop or change in dose.) * Ongoing substance or alcohol abuse * Planned surgery or hospitalization over the next 8 weeks (i.e. during the trial) * Incapacitating pain or illness or other medical condition in which, in the opinion of the clinician, the sleep intervention is unlikely to be effective.