As a physio and mother of 3 I've been suprised at how advice and support for pelvic floor exercises and problems during and after pregnancy ranges from average to absolutely terrible/none at all. In my local area you need to have had problems for months after birth before you can be referred anywhere - which is crazy given the impact it can have.
If you're looking for information, advice, support I'd recommend this leaflet from the Chartered Society of Physiotherapy www.csp.org.uk/sites/files/csp/secure/Pesonal-training-pelvic-floor.pdf, which gives information of causes of continnce problems and how to exercise effectively.
Also the following:
Association of Chartered Physiotherapists in Womens health www.acpwh.org.uk
Chartered Physiotherapists Promoting Continence www.cppc.org.uk - this includes a useful map to find a specialist physio in your area.
There are also a number of clinical guidelines available from NICE www.nice.org.uk, just search 'incontinence' and you can either read the relevant guideline itself or have a look at the supporting info for patients, e.g. www.nice.org.uk/cg40 on urinary incontinence. If you have problems and are concerned you're not getting the support/care you'd expect these guidelines set out what effective and evidence-based care should include.