As well as advising people with disabilities on the best equipment to suit their needs, Demand also design and manufacture from scratch & modify and enhance people's existing equipment to help it work better for them.

They help people of any age, and with any kind of disability regardless of their financial circumstance.

https://www.demand.org.uk/

These are available to more people than you might think. Eligibility is not only for those who cannot walk or have difficulty walking, but you could also be entitled to one should your child have behavioural difficulties due to for example being Autistic or having a developmental delay and being unaware of danger around them, or if they need to be near your vehicle when out due to a health condition. If your child receives the high rate mobility component of Disability Living Allowance they'll automatically be entitled to a Blue Badge.

https://www.gov.uk/apply-blue-badge

For general regulations about where you can park using your blue badge see:

https://www.gov.uk/government/publications/the-blue-badge-scheme-rights-and-responsibilities-in-england/the-blue-badge-scheme-rights-and-responsibilities-in-england

Blue Badges offer a number of advantages in addition to being able to park in disabled parking bays, you'll be able to park in many paid for car parks for free (always check), not have to pay drop off charges at some airports, some areas you can park on double yellow lines and some ferry companies offer reduced price tickets for blue badge holders.

If you'll be driving in Central London, you can register so you don't have to pay the Congestion Charge (for a one off £10 fee) if you or your child have a Blue Badge.

https://tfl.gov.uk/modes/driving/congestion-charge/discounts-and-exemptions?intcmp=2133

If you're thinking of using your Blue Badge in Europe, this site provides am explanation sheet to help local authorities recognise your badge, translated into many languages, to display next to your blue badge:

https://www.icarhireinsurance.com/disabled-driving-in-europe

If you or your child are disabled and need to make changes to your home you can apply to your council for a disabled facilities grant of upto £30,000. These could be for things such as widening doors or installing ramps, stairlifts, downstairs bathrooms or adapting heating and lighting controls to make them easier to use etc.

If you receive a disabled facilities grant it won't affect any benefits you're on.

https://www.gov.uk/disabled-facilities-grants

Independence At Home is a charity founded in 1965, it provides grants to people of all ages who have a physical or learning disability or long term illness and who are in financial need. They may be able to help you if you, or a member of your family, have a long term illness or disability and need financial help towards the cost to improve your independence, comfort, safety and quality of life at home.

http://www.independenceathome.org.uk/

Since 1969 the DLF has been providing free impartial advice and information on solutions, gadgets, adaptations and aids to make life easier. Their website hosts the Largest Aids to Daily Living Database in Europe with information on over 10,000 products with direct links to around 1,000 suppliers. They cover help with Leisure & Play, Communicating, Health & Personal Care and more.

https://livingmadeeasy.org.uk/

Meru is a charity that designs and builds assistive equipment for people with disabilities (primarily focussed on children). As well as mobility equipment they also do adapted toys, musical equipment, Ipad accessories etc They sell these to fund their main product which is the Bugzi, a powered indoor chair for 1 to 5 year olds. These are available to loan to families for free (as well as for sale).

https://www.merushop.org/

A radar key is a large skeleton key that opens over 10,000 locked disabled toilets around the UK. They also unlock accessible play equipment in some parks and playgrounds. They're easy to apply for and free, through your local district council.

Or you can buy one from Disability Rights UK:

https://shop.disabilityrightsuk.org/products/radar-key

Changing Places has a directory of toilets for those that require a bench or hoist

https://www.changing-places.org/find

Remap design and custom-make equipment to help disabled people live more independent lives. This includes mobility, help in the home, managing personal care, enjoying sports and hobbies and much more. All their work is carried out and checked by expert engineers, carpenters, technicians and occupational therapists. They provide this help free of charge.

https://www.remap.org.uk/

The Sunflower Scheme aims to bring awareness and visibility to non-visible disabilities. By wearing a Sunflower Lanyard you can easily make others aware that you are someone you care for has a hidden disability. We have found that this can make you feel much more comfortable when out and about and that you don't feel the constant need to be explaining yourself to others. Some settings will have staff who are specially trained to offer extra assistance to those who need it.

You can also enter your postcode on their website to find local places with people who are trained to recognise and support those wearing a Sunflower Lanyard who have hidden disabilities:

https://hiddendisabilitiesstore.com/find-the-sunflower/