cross-border tax specialist uk belgium

I'm in need of an experienced cross-border tax specialist who can have a 30 minute meeting with me to discuss my personal tax matters as a full-time employee in Belgium and self-employed individual in the UK. I need to have somebody assist me within a week. This project will require the tax specialist to be knowledgeable in both UK and Belgian taxation laws, specifically for someone who has moved to Belgium in the past few months from the UK, and has a full-time job in Belgium but now needs to sign a contract for a self-employed job in the UK which will be done at the same time.