Look.

1. The equation of Islam and Islamic with Islamist is defective.

2. Islamist atrocities abound.

3. Parts of Sharia law are offensive - but are seldom applied outside primitive states.

4. It's a lawyer's job to help his client achieve the result the client wants (by lawful means) and drafting wills to achieve an effect that conforms to Sharia law may be part of that objective, but many parts of Sharia inheritance law would be ineffective if challenged in a UK court pursuant to the Inheritance (Provision for Family and Dependants) Act 1975. Similarly family law, to an extent, must match English standards.

5. Did you know that vibrators are haram (certainly in the case of internal use and maybe more generically)? That's most upsetting!