Is a landlord in breach of contract as he didn't provide gas safety certificate?

Yes, a landlord may be in breach of contract for failing to provide a gas safety certificate, as it is a legal requirement in many jurisdictions. Landlords are obligated to ensure that gas appliances and installations are safe and to provide tenants with a valid gas safety certificate annually. Failure to do so can result in legal consequences and may also impact the tenant's safety and rights. Tenants should document their requests for the certificate and seek legal advice if the issue is not resolved.