Any tax difference if I sell shares before or after 6th April?

[Merguez]

I have a small amount of shares (current value around £2.5k) which are a legacy from a previous employee share scheme - I've had these shares for over 11 years.

They have never performed particularly well and I want to get rid of them to streamline my finances (particularly as the company I used to work for was taken over and they are now denominated in a different currency).

Does anyone know if it will make a difference to my tax position if I sell before or after the end of the tax year? Have just gone from being employed to self-employed (after redundancy) if that makes a difference.

I just want to do it while I'm thinking about it - but did wonder if it would make a difference if I wait until Monday. (Of course the share price might change, but willing to take that risk if the tax position is different.)

Many thanks!