Where does it grow?? Not in England, I think.

Hi dear Rajeev

I think it is a member of Rubiaceae.

Momordica charantia L. (Fam. Cucurbitaceae), I think.

Not a member of the Rubiaceae. Jose's suggestion looks right for the leaves, but the fruit seems off, no?

Cucumis cylocanthus

Fruits are in the end of the maturation stage?

They seem immature and unformed.

It is surely Cucurbitaceae member. I think this is Citrullus colocynthus (Cucumis colocynthus), the wild watermelon. The fruits in the picture are immature.

This plant looks like Ctenolepis garcinii (Burm.f.) C.B.Clarke (Cucurbitaceae).

Ok

excuse me. cucurbitaceae 

Cucurbitaceae family, absolutely.

Yes. It is Ctenolepis garcinii.

The reniform stipule with lacination (ciliate) is unique character.

The fruit is obreniform shaped.

the image  is not clear to me, please focus on small part

May this plant located in cucurbitaceae, but could you please increase the resolution of images?

Dear Ravikumar Sir,

that is similar to Ctenolepis garcinii. but fruits are different.

i'll try to catch clear photo.

thank you

Ctenolepis garcinii 80% sure

Pholtan Rajeev. Sebastian

Blastania garcinii (=Ctenolepis garcinii) is correct identification. Kindly click the link below to see the fruits.

https://sites.google.com/site/efloraofindia/species/a---l/cl/cucurbitaceae/ctenolepis/ctenolepis-garcinii

Thanks!