Being a Malaysian in London, finding an authentic watering hole is a must. My wife and I went to Lagenda for Saturday lunch. The restaurant is the inhouse restaurant for Holiday Villa, one of a chain of restaurants with a KL HQ.
We ordered Mee Goreng Mamak, Nasi Lemak and Assam Laksa, washed down with Kopi Tarik and Teh Tarik.
The Nasi Lemak was excellent, with fried chicken as the main meat (would have preferred curry chicken/beef) but the sambal was authentic. A chefs special on the menu.
The Mee Goreng Mamak was a bit soft and overcooked. Mee Goreng should be al dente and friend with a little charring to caramelise properly. Slightly liberal use of chilis.
The Assam laksa was disappointing. Proper Assam laksa is rather difficult to get outside of Penang but this was a poor show. The colour was not right (it was grey rather than the deep brown) and it was not particularly pungent. I guess it is the sparing use of prawn paste but I did ask if it was an authentically pungent and was assured that it was. All things relative I guess.
The Kopi Tarik and Teh Tarik were fine. The entire bill came to just over £30. A service charge of 10% is automatically added to the bill.
All in all, it was not quite up to expectations. Given the relative profusion of Malaysian restaurants in the area (Malaysia Hall, Kia-su, Nyonya, Makan and Nahar to name a few), we were disinclined to try the other items on the menu. Service was prompt and courteous (we were the only diners there at the time).

Lagenda Malaysian Cuisine does Chinese as well as Malay food. It's all very tasty and the service in Lagenda's pretty good too.