There are couple of reasons as to why your withdrawal is still pending:
1) We process withdrawals during working days which is Monday to Friday (excluding bank holidays). If you requested a withdrawal on Friday, it will remain ‘pending’ during the weekend. However you will be unable to reverse it during this time.
2) If you have outstanding documents – for example, if you are required to submit proof of identity to us – then this will delay your withdrawal request.
If you're unsure whether or not you have outstanding documents, then please get in touch with our Customer Services team through the 24/7 Live Chat on our site. They can check this for you.