"What are the requirements for a visitor visa?

You want to visit the UK for no more than six months;

you planned to leave the UK at the end of your visit;

you have enough money to support yourself, your family and your dependants and live in the UK without any help from Public Funds;

you do not intend to take employment in the UK; and

you do not intend to produce goods or provide services within the UK, including the selling of goods or services direct to members of the public."

What is nationality of your spouse?
Does she have residence ?

You are expected to go to your country of residence and apply from there.