Hi Louise,
If the dates you are searching are say about 100 years old or more, then the parish registers which are kept by the county record offices (NOT the local register office) are the only way to find the information you seek without buying a certificate.
The system work thus:
From 1 July 1 837 all births and deaths had to be reported to a local registrar, who in turn reported them to the superintendent registrar of the registration district. The superintendent registrar retained his own records but copied them, every three months, to the Registrar General at the GRO. Marriages also had to be registered. A marriage certificate (retained by the married couple) and two registers are completed at Church of England weddings. One register of the marriage entries is kept by the church. When the other register has been filled with entries (sometimes many years after some of the weddings took place) it is sent by the officiating minister to the superintendent registrar of the registration district in which the church is situated. However, every three months the minister must also prepare a further copy, from his register, of any entries of marriages taking place during that last quarter and send that copy directly to the Registrar General.
From Ancestral Trails by Mark Herber
And he also confirms:
The original registers that record births, marriages and deaths cannot be inspected by the public.
Hope you find what you are looking for.
Nell