what do I need?

Question 3

Are there any special restrictions that may affect work to your property?

The building is listed

There will almost certainly be restrictions on what is permissible and you will need to check with your borough or district council. Any alteration to your windows or doors is subject to an application for consent . We can help with this if required, but consent is required before work can proceed.
It is usually possible to draught seal the windows without consent

It’s in a conservation area subject to an Article 4 directive

There will almost certainly be restrictions on what is permissible and you will need to check with your borough or district council. Any alteration to your windows or doors is subject to an application for consent . We can help with this if required, but consent is required before work can proceed.
It is usually possible to draught seal the windows without consent

It’s in a conservation area, but not subject to an Article 4 directive

Status of such areas varies, but it is normally possible to replace like for like in appearance as long as there is no alteration to the size and shape.

I rent the property

Replacement of windows (and sashes) would require consent from the landlord.

Not sure

It would be wise to check the status of your building as undertaking certain works without permission would constitute a criminal offence.