As said, nobody on here can give you the sort of advice you really need, but I think you need to consider:
What are your short term and long term needs ? Do you have other 'rainy day' savings if this was spent ?
How old are you, and how close to when you want to retire ? When do you want to stop work ?
Will/are you accruing further pensions, and are they any good ?
£11K isn't a lot of money when spread over 20-30 years of retired life