

Established in 1991, Thomas Sinden provides construction services including refurbishment and new-build, mechanical and electrical, and building safety, across London and the South-east. Recent projects include the renovation and expansion of grade I-listed Gainsborough’s House Museum in Sudbury and the sustainable retrofit of the Quadrant House office building in Caterham.
Main data
Company type | Contractor |
Number of UK staff | 140 |
Maximum days holiday (excl holiday purchases) | 30 |
Hybrid working policy | Yes |
Average training hours per staff member per year | 43.8 |
Number of staff on entry-level training schemes | 28 |
Of those, how many apprentices | 10 |
Female staff (%) | 11 |
Staff from non-white ethnic background (%) | 12 |
Offers private healthcare | Some staff |
Offers sabbaticals/career breaks | Some staff |
Offers enhanced maternity benefits | No |
Offers enhanced paternity benefits | No |
ISO or B Corp certified | ISO |
Staff Wellbeing
Physical – fitness classes, health measurement tools, health and nutrition advice | Yes |
Psychological – resilience programmes, mental health resources, flexible working policies | Yes |
Social – team days out, charity days, diversity and inclusion policies | Yes |
Staff surveys and focus groups | Yes |
Health and safety stats | Yes |
Employee assistance programme stats | Yes |
Stress audit | No |
HR data such as staff absences/sickness and staff turnover | Yes |
Aggregated health data | No |
Feedback from health champions | No |
Exit interviews | Yes |