Flat fees from £5k per month - One retainer, all five fibres.

Overall Five Fibre score
74/100
Assessment
Independent
Last reviewed
2026-07-03
Data confidence
High

The Five Fibre score measures this network against Twine Growth's Five Fibre Framework™ using the information available at the assessment date. It is not an endorsement, a financial recommendation or a recommendation to purchase a franchise.

At a glance

Drain Doctor at a glance.

Industry
Maintenance, Building, Plumbing and Gardening
Franchise category
Drainage Franchise
Sub industry
Drainage Service
Founded
1994
Franchising started
1994
Approximate franchisees
35
Approximate locations
35
Headquarters
Brackley
BFA member
Yes
UK origin
No
International brand
Yes
Recruitment status
Active

Investment

Franchise investment.

Investment from
£35,000
Investment to
£85,000
Management franchise
Yes
Mobile
Yes
Executive franchise
Yes

View franchise opportunity

Investment figures change. Confirm current requirements directly with the franchise network before making any decision.

Five Fibre assessment

How the foundations score.

Every franchise network is assessed across the five connected areas Twine Growth believes support sustainable franchise growth.

How the Five Fibre score is calculated

01 Assess Strong16/20

Public information reviewed for Drain Doctor, including its main website and franchise opportunity material, shows an established franchise proposition and evidence of a repeatable commercial model. The score is capped where founder dependency, unit economics or the full ideal franchisee analysis are not independently visible in public information.

02 Build Strong16/20

The public franchise material for Drain Doctor evidences brand standards, franchisee support and a structured operating model. Where training, onboarding, systems or central resources are described publicly this supports the score, while points are withheld for internal playbooks and central system access that cannot be verified from public sources.

03 Launch Strong15/20

Drain Doctor has a visible franchise proposition and a defined route for prospective franchisees to enquire or progress. Public recruitment messaging and franchise information support the score. Full marks are not assumed where the complete discovery, selection and go to market process is not published.

04 Grow Strong13/20

Public evidence shows that Drain Doctor is actively recruiting franchisees and presents territory, expansion or network growth information. The score remains conservative because monthly enquiry volumes, source attribution, conversion rates and the degree of founder independence in recruitment are generally internal metrics and are not publicly verifiable.

05 Amplify Strong14/20

Public customer and franchise information for Drain Doctor shows brand level marketing and support for operating locally. The score reflects visible local presence and marketing support, but is limited where location level lead generation plans, enquiry tracking and franchisee performance data are not publicly disclosed.

74/100 Overall Five Fibre score

Drain Doctor scores 74/100, placing the network in the Growth Ready band under the Five Fibre framework. Public information indicates the strongest visible foundation is Assess, while Grow is the area with the least publicly verifiable evidence. This is an external assessment based only on information available publicly on 22/09/2026, so private systems, performance data or processes may justify a different score.

Benchmark

How this network compares.

Overall, against the whole Index
This network74
UK Index average75
Overall, against Maintenance, Building, Plumbing and Gardening (37 networks)
This network74
Industry average76

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The Five Fibre Franchise Growth Scorecard

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