The hit Channel 4 architectural show Grand Designs sees ambitious individuals build their dream family home, and this week's episode is no different.

In the first week of the new series, Manchester couple Colin and Adele learnt the hard truths and the dos and don'ts of building their curved glass mansion.

The second in the series saw Tunbridge Wells-based Kate and Rob replace their rundown post-war prefab home that stood the ages and lasted a lot longer than expected.

After that Canterbury-based couple, Dorran and Vereuschka build an underground hidden home but trouble arose for the pair after they parted ways with their contractor and took on the project themselves.

They were then followed by Hertfordshire couple Matthew and Davidzo who built an Australian and Zimbabwean-inspired home on the sloping hills of the Chess Valley.

Derbyshire couple Mike and Sarah sought to create a medieval longhouse-inspired build in the week after with hopes to bring the family together.

Whilst last week saw Bedfordshire couple, John and Helen build a modernist pavilion with a £1.3 million budget to create a comfortable and accessible life for the pair. 

Now, this week sees London-based Corinne look for a fresh start in a tight and awkward extension.

Londoner takes on awkward and tight extension with £600,000 budget in Sydenham Hill on Grand Designs

London-based chef Corinne is looking for a fresh start after the breakdown of her marriage and her cancer diagnosis.

With plans to find that fresh start by building an impressive extension for her end-of-terrace home on the strip of land next to her home which happens to be a conservation area.

But with the plot being tiny and awkwardly shaped, construction becomes very difficult and complicated.

However, if the challenges are successfully overcome, Corinne will have impressive and one-of-a-kind views on top of Sydenham Hill, one of the highest points in London.

You can watch Grand Designs at 9pm tonight on Channel 4 and All 4.