I'm not sure if you have any specific career goals. If that's the case, it may be better to take a semester to study more options, take the GMAT and start a much better programme next year.

The low risk option is the better school, not the cheapest one. Schools that are higher quality tend to have better outcomes, while poor schools have a much higher chance of delivering bad outcomes.

[Edited by Duncan on Aug 06, 2019]

I know about two schools that have applications open for January intake - HEC Paris and Rotterdam Netherlands.
The application deadline for INSEAD was on 24/7/2/19.
Even if I apply to them, the fee structure is way beyond my budget.
Please suggest what schools should I look for Jan intake with rolling applications, that are near 20000£

Take a look at mastersportal.eu

Even if you have to wait until September next year, a better school is ways better. The falling pound might increase your budget. It's hard for me to be more specific without working through your goals and realistic options.

At 20k, I think the MiF or MSc could be a better option. For the MBA, I think the MBAs at Koç, Northumbria, Nottingham Trent, Alba, Reutlingen, RGU, Sabanci, Stirling and Zagreb stand out. I had a fellowship at Trent until recently and was impressed by the school.