Need soldering and consulting in London

Hi, I need a skilled solderer to do some pretty straightforward work in London.

This is for an on-going personal project that uses arduino, raspberry pis, and various basic components that are already working just need to modify/switch adapt additional components that I already have.
May also need additional paid help with code, troubleshooting, or more modifications in coming weeks but for now really just need help with soldering, ASAP. Reasonable pay if initial job can be done well and fairly quickly, within the next week.

Cheers