Services I offer as a CTO, architect, engineer as follows.

Software Architecture Review

Overview: Review of the underlying software architecture for a product - monolithic, microservices applications.
Cost: £3000+ depending on size/breadth/depth

Team, Process, Product/Tech Review

Overview: Review of your product/engineering function and associated components
Cost: Approximately £5000+ depending on size

Interim CTO Services

Overview: Interim CTO services to cover a departing CTO/VP of engineering
Cost: £1000+ day

Fractional CTO Services

Overview: To advise you on product/tech strategy, review a pitchdeck, plan a product build or guide a product build
Cost: Starting from £1500 a month

Hourly CTO Support

Overview: Hourly support/advice on a problem or situation
Cost: £250 an hour