That Solihull website looks terribly unprofessional. Barely any information about what the heck Solihull is supposed to be and some wishy washy
"Background
The Solihull Approach is a UK programme, developed with the population of the UK and with research carried out on the UK population. It was established 20 years ago. It has been shown to have a high acceptance in other cultures too, such as Pakistan, Iceland, Australia, Ghana and Barbados. Resources are developed by professionals from health, education and elsewhere working together with parents.
Government policy
The Solihull Approach is included in the UK Department of Health’s Healthy Child Programme, in Northern Ireland’s strategy for training health visitors and midwives, in Scotland’s strategy for training health visitors and child practitioners. Download Document
Research
It is an evidence based programme. There are 19 research publications with more in the pipeline and an ongoing RCT. Details are on this website, see Research.
For example, a research study investigated what impact the Solihull Approach training has on teachers’ levels of stress, anxiety, mood, sense of teacher efficacy and self-esteem at six months after training showed that teachers who received the Solihull Approach training showed benefits six months later, a statistically significant increase in satisfaction with their helping role, self-esteem, and teacher efficacy scores and a decrease in feeling burnt out/stressed. Teachers who did not receive the training (control group) only showed an improvement in teacher efficacy over the period suggesting that it was receiving the training which caused these benefits. In the group receiving Solihull Approach training the quantitative data suggests there had been an impact on teachers’ interactions with their pupils, the parents and colleagues, and it has led to wider school changes.
The Solihull Approach is included in the Early Intervention Foundation document. It is an example of good practice for NICE, is on the Commissioner’s Toolkit and was the first to be awarded the CANparent Quality Mark for both the face to face and online parenting course.
Age range
The resources cover the complete child age range from conception to age 18 years.
Early intervention offer in the early years
2 day Foundation training for the antenatal team, children’s centres, health visitors etc (can be cascaded)
Cascade follow-up seminars on trauma awareness, attachment and brain development to embed theory into practice
Peer Breastfeeding Supporter Training, contributes to BFI status
Solihull Approach Early Years Foundation training for nursery nurses and childminders
Training for facilitators to deliver antenatal and postnatal face to face groups for mothers and fathers (can be cascaded)
Antenatal and postnatal online courses for mother and fathers (increasing accessibility)
Website with free virtual memory box to support access to online courses
Multi-user licenses for online antenatal, postnatal and course for parents increasing coverage across a population"
bad copy writing doesn't sound professional 
What on earth does Solihull even mean? I wonder how watertight the 'research' is especially as the government is paying shit loads of money to this organisation.