Welcome to the MGRIA

MWCIA has now included the TOP100 members within it’s association which includes the Master Garden Room installer association. With Rubicon in North Wales becoming our most recent member.

What is TOP100?

The TOP 100 Trades was a unique trade organisation formed by Hanley Amos Stewart Building Surveyors, who have been in private practice for over 20 years. The Principal Surveyor, Mr D Waterworth BSc (Hons) FBEng MEWI is a leading Expert Witness in Construction Disputes and has extensive knowledge of building disputes and therefore understands the need for a bone-fide list of the best trades people within the UK. Which has now been incorporated into the MWCIA.


The purpose of such a register would be to advise and protect the general public/consumers. Throughout the last 20 years, what has become apparent to Mr Waterworth is that there is no clear directive to which the consumer can revert or refer to when attempting to find a trades person to carry out work at the consumers property. This is borne out by the number of disputes and Court cases that Mr Waterworth has worked on in the last 20 years, over 1,000 in number.

Protecting the consumer

Clearly the consumers are not well-advised nor well protected, and it was with these concerns in mind that the TOP 100 Trades was formed over 7 years ago. TOP 100 Trades has since been incorporated into the MWCIA, primarily concentrates on dealing with window and conservatory industry. A recent addition is the MGRIA (Master Garden Rooms Installers Association), to benefit from the membership of the association and its consumer protection

Consumer Charters

Card Image

MWCIA Consumer Charter - Exclusive to our members

Card Image

MGRIA Consumer Charter - Exclusive to our members