BLB Surveying key contact

Christopher Tunbridge

BSc (Hons) MRICS
Managing Director BLB Surveyors

Lynn Sebbage

Financial Director

Paul Rawlinson

Quantity Surveying Director

Jon Siley

BSc (Hons) MRICS MBeng
Building Surveying Director

Grant Crossley

Project Management Director

Derek Raven

Senior M&E Engineer




Derek started his career as an Apprentice Electrician, qualifying in the 1980s and working as a self-employed electrician for various contractors until 1992, when he joined an engineering company as a Controls Engineer.

Following additional professional training he qualified as a Heating Engineer with CCN1 gas qualifications and Trend Operator training.

Derek returned to college in 2000 to complete an HNC in Building Services Engineering and joined a private consultancy working for local authorities and private clients. Derek now heads up the M&E department at BLB Group.

Other specialisms include Project Monitoring and Development Management.


Derek’s mixture of hands on experience and technical knowledge enables him to better understand and plan engineering tasks and manage them through to a successful conclusion. His flexible working attitude and ability to offer constructive advice on engineering matters makes him an invaluable part of the team at BLB. Derek has worked successfully as an MEP Designer, Project Manager, Contract Administrator and Clerk of Works for both private clients and public authorities.

Derek Raven image

Derek Raven

01273 301 888

BLB House
15 -16 Hunns Mere Way
Brighton BN2 6AH