So, this September I applied for a Standard Visitor Visa in order to spend 3-4 weeks in the London office of the company where I worked, and in the application I said I would stay 3 weeks for a business seminar. I had an invite & employment letter to back the application. I was supposed to go in November, but in the meantime a lot of things happened at work and I left the company, and I didn't use the visa.

If I wanted to go to London next month just for a few days (so not 3 weeks, as stated in the application) simply for tourism purposes, would that be a problem?

I read on some of the previous questions here that if your main reason for applying was business-related, your first visit has to be a business one, but all these questions were prior the changes to the visa categories. And how will they know if you're entering the UK for business or travel, except your answer to that question?

So, I want to know when I enter the UK whether someone will ask me if this is a tourist visit, even though the initial reason stated on my application is business, and if that will be an issue?